DIV+CSS 网页布局之：混合布局 - 彼岸时光-HTML Tutorial-php.cn

Table of Contents

1、混合布局" >1、混合布局

2、固定宽度混合布局" >2、固定宽度混合布局

3、自适应混合布局" >3、自适应混合布局

4、混合布局的应用" >4、混合布局的应用

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DIV+CSS 网页布局之：混合布局 - 彼岸时光

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May 22, 2016 pm 05:19 PM

1、混合布局

　　在了解了一列、两列和三列布局之后，混合布局也就不难理解了，混合布局也可以叫综合型布局，那么混合布局就可以在一列布局的基础之上，分为两列布局，三列布局，网页布局的结构普遍都是三列布局，但是在三列布局的基础上，可以根据实际需求，对网页再进行划分。

<span style="color: #008080;"> 1</span> <span style="color: #0000ff;"><span style="color: #ff00ff;">DOCTYPE html</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 2</span> <span style="color: #0000ff;"><span style="color: #800000;">html</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 3</span> <span style="color: #0000ff;"><span style="color: #800000;">head</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 4</span>     <span style="color: #0000ff;"><span style="color: #800000;">meta </span><span style="color: #ff0000;">charset</span><span style="color: #0000ff;">="UTF-8"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 5</span>     <span style="color: #0000ff;"><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>混合布局<span style="color: #0000ff;"></span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 6</span> <span style="color: #0000ff;"><span style="color: #800000;">style</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 7</span> <span style="background-color: #f5f5f5; color: #800000;">*</span><span style="background-color: #f5f5f5; color: #000000;">{</span><span style="background-color: #f5f5f5; color: #ff0000;">margin</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span><span style="background-color: #f5f5f5; color: #ff0000;">padding</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span><span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 8</span> <span style="background-color: #f5f5f5; color: #800000;">#header</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 9</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">50px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">10</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">blue</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">11</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">12</span> <span style="background-color: #f5f5f5; color: #800000;">#main</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">13</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">100%</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">14</span> <span style="background-color: #f5f5f5; color: #ff0000;">    overflow</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">hidden</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">15</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">16</span> <span style="background-color: #f5f5f5; color: #800000;">#main .main-left</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">17</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">20%</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">18</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">800px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">19</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">lightgreen</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">20</span> <span style="background-color: #f5f5f5; color: #ff0000;">    float</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">left</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">21</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">22</span> <span style="background-color: #f5f5f5; color: #800000;">#main .main-right</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">23</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">80%</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">24</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">800px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">25</span> <span style="background-color: #f5f5f5; color: #ff0000;">    float</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">right</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">26</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">27</span> <span style="background-color: #f5f5f5; color: #800000;">#main .main-right .right-l</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">28</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">80%</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">29</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">800px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">30</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">yellow</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">31</span> <span style="background-color: #f5f5f5; color: #ff0000;">    float</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">left</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">32</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">33</span> <span style="background-color: #f5f5f5; color: #800000;">#main .main-right .right-r</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">34</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">20%</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">35</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">800px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">36</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">pink</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">37</span> <span style="background-color: #f5f5f5; color: #ff0000;">    float</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">right</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">38</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">39</span> <span style="background-color: #f5f5f5; color: #800000;">#footer</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">40</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">50px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">41</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">gray</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">42</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">43</span> <span style="color: #0000ff;"></span><span style="color: #800000;">style</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">44</span> <span style="color: #0000ff;"></span><span style="color: #800000;">head</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">45</span> <span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">46</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="header"</span><span style="color: #0000ff;">></span>头部<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">47</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="main"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">48</span>     <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="main-left"</span><span style="color: #0000ff;">></span>左边<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">49</span>     <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="main-right"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">50</span>         <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="right-l"</span><span style="color: #0000ff;">></span>右-左<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">51</span>         <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="right-r"</span><span style="color: #0000ff;">></span>右-右<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">52</span>     <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">53</span> <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">54</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="footer"</span><span style="color: #0000ff;">></span>页脚<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">55</span> <span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">56</span> <span style="color: #0000ff;"></span><span style="color: #800000;">html</span><span style="color: #0000ff;">></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

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2、固定宽度混合布局

　　固定宽度的混合布局结构，同固定宽度的三列布局模式相同。

<span style="color: #008080;"> 1</span> <span style="color: #0000ff;"><span style="color: #ff00ff;">DOCTYPE html</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 2</span> <span style="color: #0000ff;"><span style="color: #800000;">html</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 3</span> <span style="color: #0000ff;"><span style="color: #800000;">head</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 4</span>     <span style="color: #0000ff;"><span style="color: #800000;">meta </span><span style="color: #ff0000;">charset</span><span style="color: #0000ff;">="UTF-8"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 5</span>     <span style="color: #0000ff;"><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>固定宽度混合布局<span style="color: #0000ff;"></span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 6</span> <span style="color: #0000ff;"><span style="color: #800000;">style</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 7</span> <span style="background-color: #f5f5f5; color: #800000;">*</span><span style="background-color: #f5f5f5; color: #000000;">{</span><span style="background-color: #f5f5f5; color: #ff0000;">margin</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span><span style="background-color: #f5f5f5; color: #ff0000;">padding</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span><span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 8</span> <span style="background-color: #f5f5f5; color: #800000;">#header</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 9</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">50px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">10</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">blue</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">11</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">12</span> <span style="background-color: #f5f5f5; color: #800000;">#main</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">13</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">960px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">14</span> <span style="background-color: #f5f5f5; color: #ff0000;">    margin</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0 auto</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">15</span> <span style="background-color: #f5f5f5; color: #ff0000;">    overflow</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">hidden</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">16</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">17</span> <span style="background-color: #f5f5f5; color: #800000;">#main .main-left</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">18</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">200px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">19</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">800px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">20</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">lightgreen</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">21</span> <span style="background-color: #f5f5f5; color: #ff0000;">    float</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">left</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">22</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">23</span> <span style="background-color: #f5f5f5; color: #800000;">#main .main-right</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">24</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">760px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">25</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">800px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">26</span> <span style="background-color: #f5f5f5; color: #ff0000;">    float</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">right</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">27</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">28</span> <span style="background-color: #f5f5f5; color: #800000;">#main .main-right .right-l</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">29</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">560px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">30</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">800px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">31</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">yellow</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">32</span> <span style="background-color: #f5f5f5; color: #ff0000;">    float</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">left</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">33</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">34</span> <span style="background-color: #f5f5f5; color: #800000;">#main .main-right .right-r</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">35</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">200px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">36</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">800px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">37</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">pink</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">38</span> <span style="background-color: #f5f5f5; color: #ff0000;">    float</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">right</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">39</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">40</span> <span style="background-color: #f5f5f5; color: #800000;">#footer</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">41</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">960px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">42</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">50px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">43</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">gray</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">44</span> <span style="background-color: #f5f5f5; color: #ff0000;">    margin</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0 auto</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">45</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">46</span> <span style="color: #0000ff;"></span><span style="color: #800000;">style</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">47</span> <span style="color: #0000ff;"></span><span style="color: #800000;">head</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">48</span> <span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">49</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="header"</span><span style="color: #0000ff;">></span>头部<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">50</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="main"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">51</span>     <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="main-left"</span><span style="color: #0000ff;">></span>左边<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">52</span>     <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="main-right"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">53</span>         <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="right-l"</span><span style="color: #0000ff;">></span>右-左<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">54</span>         <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="right-r"</span><span style="color: #0000ff;">></span>右-右<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">55</span>     <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">56</span> <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">57</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="footer"</span><span style="color: #0000ff;">></span>页脚<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">58</span> <span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">59</span> <span style="color: #0000ff;"></span><span style="color: #800000;">html</span><span style="color: #0000ff;">></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

Copy after login

3、自适应混合布局

　　自适应混合布局是对三列自适应布局的改进。

<span style="color: #008080;"> 1</span> <span style="color: #0000ff;"><span style="color: #ff00ff;">DOCTYPE html</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 2</span> <span style="color: #0000ff;"><span style="color: #800000;">html</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 3</span> <span style="color: #0000ff;"><span style="color: #800000;">head</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 4</span>     <span style="color: #0000ff;"><span style="color: #800000;">meta </span><span style="color: #ff0000;">charset</span><span style="color: #0000ff;">="UTF-8"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 5</span>     <span style="color: #0000ff;"><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>自适应混合布局<span style="color: #0000ff;"></span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 6</span> <span style="color: #0000ff;"><span style="color: #800000;">style</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 7</span> <span style="background-color: #f5f5f5; color: #800000;">*</span><span style="background-color: #f5f5f5; color: #000000;">{</span><span style="background-color: #f5f5f5; color: #ff0000;">margin</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span><span style="background-color: #f5f5f5; color: #ff0000;">padding</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span><span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 8</span> <span style="background-color: #f5f5f5; color: #800000;">#header</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 9</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">50px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">10</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">blue</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">11</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">12</span> <span style="background-color: #f5f5f5; color: #800000;">#main</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">13</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">100%</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">14</span> <span style="background-color: #f5f5f5; color: #ff0000;">    position</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">relative</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">15</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">16</span> <span style="background-color: #f5f5f5; color: #800000;">#main .main-left</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">17</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">20%</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">18</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">800px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">19</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">red</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">20</span> <span style="background-color: #f5f5f5; color: #ff0000;">    position</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">absolute</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">21</span> <span style="background-color: #f5f5f5; color: #ff0000;">    left</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">22</span> <span style="background-color: #f5f5f5; color: #ff0000;">    top</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">23</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">24</span> <span style="background-color: #f5f5f5; color: #800000;">#main .main-center</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">25</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">800px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">26</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">lightgreen</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">27</span> <span style="background-color: #f5f5f5; color: #ff0000;">    margin</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0 20%</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">28</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">29</span> <span style="background-color: #f5f5f5; color: #800000;">#main .main-right</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">30</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">20%</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">31</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">800px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">32</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">pink</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">33</span> <span style="background-color: #f5f5f5; color: #ff0000;">    position</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">absolute</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">34</span> <span style="background-color: #f5f5f5; color: #ff0000;">    right</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">35</span> <span style="background-color: #f5f5f5; color: #ff0000;">    top</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">36</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">37</span> <span style="background-color: #f5f5f5; color: #800000;">#footer</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">38</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">50px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">39</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">gray</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">40</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">41</span> <span style="color: #0000ff;"></span><span style="color: #800000;">style</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">42</span> <span style="color: #0000ff;"></span><span style="color: #800000;">head</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">43</span> <span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">44</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="header"</span><span style="color: #0000ff;">></span>头部<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">45</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="main"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">46</span>     <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="main-center"</span><span style="color: #0000ff;">></span>设计网页的第一步就是设计版面布局，搭建网站结构，网页排版的合理性，在一定程度上也影响着网站整体的布局以及后期的优化。一个好的网站形象能更容易地吸引用户、留住用户。因此，网站首页第一屏的排版非常重要，很多时候能决定用户的去与留。<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">47</span>     <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="main-right"</span><span style="color: #0000ff;">></span>右列<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">48</span>     <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="main-left"</span><span style="color: #0000ff;">></span>左列<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">49</span> <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">50</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="footer"</span><span style="color: #0000ff;">></span>页脚<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">51</span> <span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">52</span> <span style="color: #0000ff;"></span><span style="color: #800000;">html</span><span style="color: #0000ff;">></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

Copy after login

4、混合布局的应用

　　混合布局在网站中应用比较广泛，再复杂的布局结构，他们的原理都是相通的，可以举一反三。网页布局就是依据内容、功能的不同，使用 CSS 对元素进行格式设置，根据版面的布局结构进行排列，那么布局也就是元素与元素之间的关系，或者向一边看齐，或者精准定位，或者有一定间距，或者嵌套，或者相互堆叠，使元素按照设计稿的样式漂亮的呈现在网页上。

<span style="color: #008080;">  1</span> <span style="color: #0000ff;"><span style="color: #ff00ff;">DOCTYPE html</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">  2</span> <span style="color: #0000ff;"><span style="color: #800000;">html</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">  3</span> <span style="color: #0000ff;"><span style="color: #800000;">head</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">  4</span>     <span style="color: #0000ff;"><span style="color: #800000;">meta </span><span style="color: #ff0000;">charset</span><span style="color: #0000ff;">="UTF-8"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">  5</span>     <span style="color: #0000ff;"><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>混合布局<span style="color: #0000ff;"></span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">  6</span> <span style="color: #0000ff;"><span style="color: #800000;">style</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">  7</span> <span style="background-color: #f5f5f5; color: #800000;">*</span><span style="background-color: #f5f5f5; color: #000000;">{</span><span style="background-color: #f5f5f5; color: #ff0000;">margin</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span><span style="background-color: #f5f5f5; color: #ff0000;">padding</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span><span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">  8</span> <span style="background-color: #f5f5f5; color: #800000;">#header</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">  9</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">30px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 10</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">blue</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 11</span> <span style="background-color: #f5f5f5; color: #ff0000;">    margin-bottom</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">10px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 12</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 13</span> <span style="background-color: #f5f5f5; color: #800000;">#nav</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 14</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">960px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 15</span> <span style="background-color: #f5f5f5; color: #ff0000;">    margin</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0 auto</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 16</span> <span style="background-color: #f5f5f5; color: #ff0000;">    margin-bottom</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">10px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 17</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 18</span> <span style="background-color: #f5f5f5; color: #800000;">#main</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 19</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">960px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 20</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">800px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 21</span> <span style="background-color: #f5f5f5; color: #ff0000;">    margin</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0 auto</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 22</span> <span style="background-color: #f5f5f5; color: #ff0000;">    overflow</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">hidden</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 23</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 24</span> <span style="background-color: #f5f5f5; color: #800000;">#main .left</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 25</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">200px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 26</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">800px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 27</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">lightgreen</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 28</span> <span style="background-color: #f5f5f5; color: #ff0000;">    float</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">left</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 29</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 30</span> <span style="background-color: #f5f5f5; color: #800000;">#main .right</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 31</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">750px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 32</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">800px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 33</span> <span style="background-color: #f5f5f5; color: #ff0000;">    float</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">right</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 34</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 35</span> <span style="background-color: #f5f5f5; color: #800000;">#main .right .sup</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 36</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">200px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 37</span> <span style="background-color: #f5f5f5; color: #ff0000;">    margin-bottom</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">10px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 38</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 39</span> <span style="background-color: #f5f5f5; color: #800000;">#main .right .sup-left</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 40</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">370px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 41</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">200px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 42</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">pink</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 43</span> <span style="background-color: #f5f5f5; color: #ff0000;">    float</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">left</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 44</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 45</span> <span style="background-color: #f5f5f5; color: #800000;">#main .right .sup-right</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 46</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">370px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 47</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">200px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 48</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">orange</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 49</span> <span style="background-color: #f5f5f5; color: #ff0000;">    float</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">right</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 50</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 51</span> <span style="background-color: #f5f5f5; color: #800000;">#main .right .middle</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 52</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">300px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 53</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">yellow</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 54</span> <span style="background-color: #f5f5f5; color: #ff0000;">    margin-bottom</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">10px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 55</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 56</span> <span style="background-color: #f5f5f5; color: #800000;">#main .right .sub</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 57</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">280px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 58</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">purple</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 59</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 60</span> <span style="background-color: #f5f5f5; color: #800000;">#footer</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 61</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">960px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 62</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">50px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 63</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">gray</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 64</span> <span style="background-color: #f5f5f5; color: #ff0000;">    margin</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0 auto</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 65</span> <span style="background-color: #f5f5f5; color: #ff0000;">    margin-top</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">10px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 66</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 67</span> <span style="background-color: #f5f5f5; color: #800000;">#nav ul</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 68</span> <span style="background-color: #f5f5f5; color: #ff0000;">    list-style</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">none</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 69</span> <span style="background-color: #f5f5f5; color: #ff0000;">    background</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">lightgray</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 70</span> <span style="background-color: #f5f5f5; color: #ff0000;">    overflow</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">hidden</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 71</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 72</span> <span style="background-color: #f5f5f5; color: #800000;">#nav li</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 73</span> <span style="background-color: #f5f5f5; color: #ff0000;">    float</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">left</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 74</span> <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;"> 75</span> <span style="background-color: #f5f5f5; color: #800000;">#nav li a</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 76</span> <span style="background-color: #f5f5f5; color: #ff0000;">    display</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">block</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 77</span> <span style="background-color: #f5f5f5; color: #ff0000;">    color</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">black</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 78</span> <span style="background-color: #f5f5f5; color: #ff0000;">    width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">104px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 79</span> <span style="background-color: #f5f5f5; color: #ff0000;">    height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">30px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 80</span> <span style="background-color: #f5f5f5; color: #ff0000;">    line-height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color:"></span></span></span></span></span></span></span>

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The official account web page update cache, this thing is simple and simple, and it is complicated enough to drink a pot of it. You worked hard to update the official account article, but the user still opened the old version. Who can bear the taste? In this article, let’s take a look at the twists and turns behind this and how to solve this problem gracefully. After reading it, you can easily deal with various caching problems, allowing your users to always experience the freshest content. Let’s talk about the basics first. To put it bluntly, in order to improve access speed, the browser or server stores some static resources (such as pictures, CSS, JS) or page content. Next time you access it, you can directly retrieve it from the cache without having to download it again, and it is naturally fast. But this thing is also a double-edged sword. The new version is online,

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