經典三列佈局，也稱為聖杯佈局【Holy Grail of Layouts】
Kevin Cornell在2006年提出的一個佈局模型概念，在國內最早是由淘寶UED的工程師傳播開來，它的佈局要求有幾點：
1、三列佈局，中間寬度自適應，兩邊定寬；
2、中間欄要在瀏覽器中優先展示渲染；
3、允許任意列的高度最高；
4、要求只用一個額外的DIV標籤；
5、要求用最簡單的CSS、最少的HACK語句；
1.聖杯佈置：
<span style="color: #0000ff"><!</span><span style="color: #ff00ff">DOCTYPE html</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">html</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">head</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><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: #0000ff"><</span><span style="color: #800000">meta </span><span style="color: #ff0000">http-equiv</span><span style="color: #0000ff">="X-UA-Compatible"</span><span style="color: #ff0000"> content</span><span style="color: #0000ff">="IE=edge,chrome=1"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">title</span><span style="color: #0000ff">></span>圣杯布局<span style="color: #0000ff"></</span><span style="color: #800000">title</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">style </span><span style="color: #ff0000">type</span><span style="color: #0000ff">="text/css"</span><span style="color: #0000ff">></span><span style="background-color: #f5f5f5; color: #800000">
body </span><span style="background-color: #f5f5f5; color: #000000">{</span><span style="background-color: #f5f5f5; color: #ff0000">background-color</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff"> #ffffff</span><span style="background-color: #f5f5f5; color: #000000">;</span><span style="background-color: #f5f5f5; color: #ff0000"> font-size</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">14px</span><span style="background-color: #f5f5f5; color: #000000">;</span><span style="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
#hd, #ft </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">20px 3px</span><span style="background-color: #f5f5f5; color: #000000">;</span><span style="background-color: #f5f5f5; color: #ff0000"> background-color</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff"> #cccccc</span><span style="background-color: #f5f5f5; color: #000000">;</span><span style="background-color: #f5f5f5; color: #ff0000"> text-align</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff"> center</span><span style="background-color: #f5f5f5; color: #000000">;</span><span style="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.bd-lft, .bd-rgt, .bd-3-lr, .bd-3-ll, .bd-3-rr </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">10px 0</span><span style="background-color: #f5f5f5; color: #000000">;</span><span style="background-color: #f5f5f5; color: #ff0000"> min-width</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">400px</span><span style="background-color: #f5f5f5; color: #000000">;</span><span style="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.main </span><span style="background-color: #f5f5f5; color: #000000">{</span><span style="background-color: #f5f5f5; color: #ff0000">background-color</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff"> #03a9f4</span><span style="background-color: #f5f5f5; color: #000000">;</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">#ffffff</span><span style="background-color: #f5f5f5; color: #000000">;</span><span style="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.aside, .aside-1, .aside-2 </span><span style="background-color: #f5f5f5; color: #000000">{</span><span style="background-color: #f5f5f5; color: #ff0000">background-color</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff"> #00bcd4</span><span style="background-color: #f5f5f5; color: #000000">;</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">#ffffff</span><span style="background-color: #f5f5f5; color: #000000">;</span><span style="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
p </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">20px</span><span style="background-color: #f5f5f5; color: #000000">;</span><span style="background-color: #f5f5f5; color: #ff0000"> text-align</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff"> center</span><span style="background-color: #f5f5f5; color: #000000">;</span><span style="background-color: #f5f5f5; color: #000000">}</span>
<span style="background-color: #f5f5f5; color: #008000">/*</span><span style="background-color: #f5f5f5; color: #008000"> 左侧栏固定宽度，右侧自适应 </span><span style="background-color: #f5f5f5; color: #008000">*/</span><span style="background-color: #f5f5f5; color: #800000">
.bd-lft </span><span style="background-color: #f5f5f5; color: #000000">{</span><span style="background-color: #f5f5f5; color: #ff0000">
zoom</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">1</span><span style="background-color: #f5f5f5; color: #000000">;</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="background-color: #f5f5f5; color: #ff0000">
padding-left</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">210px</span><span style="background-color: #f5f5f5; color: #000000">;</span>
<span style="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.bd-lft .aside </span><span style="background-color: #f5f5f5; color: #000000">{</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="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="background-color: #f5f5f5; color: #ff0000">
margin-left</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="background-color: #f5f5f5; color: #008000">/*</span><span style="background-color: #f5f5f5; color: #008000">= -100%</span><span style="background-color: #f5f5f5; color: #008000">*/</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="background-color: #f5f5f5; color: #ff0000">
left</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">-210px</span><span style="background-color: #f5f5f5; color: #000000">;</span> <span style="background-color: #f5f5f5; color: #008000">/*</span><span style="background-color: #f5f5f5; color: #008000"> = -parantNode.paddingLeft </span><span style="background-color: #f5f5f5; color: #008000">*/</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="background-color: #f5f5f5; color: #008000">/*</span><span style="background-color: #f5f5f5; color: #008000">IE6 hack</span><span style="background-color: #f5f5f5; color: #008000">*/</span>
<span style="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.bd-lft .main </span><span style="background-color: #f5f5f5; color: #000000">{</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="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="background-color: #f5f5f5; color: #000000">}</span>
<span style="background-color: #f5f5f5; color: #008000">/*</span><span style="background-color: #f5f5f5; color: #008000"> 右侧栏固定宽度，左侧自适应 </span><span style="background-color: #f5f5f5; color: #008000">*/</span><span style="background-color: #f5f5f5; color: #800000">
.bd-rgt </span><span style="background-color: #f5f5f5; color: #000000">{</span><span style="background-color: #f5f5f5; color: #ff0000">
zoom</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">1</span><span style="background-color: #f5f5f5; color: #000000">;</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="background-color: #f5f5f5; color: #ff0000">
padding-right</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">210px</span><span style="background-color: #f5f5f5; color: #000000">;</span>
<span style="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.bd-rgt .aside </span><span style="background-color: #f5f5f5; color: #000000">{</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="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="background-color: #f5f5f5; color: #ff0000">
margin-left</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="background-color: #f5f5f5; color: #008000">/*</span><span style="background-color: #f5f5f5; color: #008000"> = -this.width </span><span style="background-color: #f5f5f5; color: #008000">*/</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="background-color: #f5f5f5; color: #ff0000">
right</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">-210px</span><span style="background-color: #f5f5f5; color: #000000">;</span> <span style="background-color: #f5f5f5; color: #008000">/*</span><span style="background-color: #f5f5f5; color: #008000"> = -parantNode.paddingRight </span><span style="background-color: #f5f5f5; color: #008000">*/</span>
<span style="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.bd-rgt .main </span><span style="background-color: #f5f5f5; color: #000000">{</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="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="background-color: #f5f5f5; color: #000000">}</span>
<span style="background-color: #f5f5f5; color: #008000">/*</span><span style="background-color: #f5f5f5; color: #008000"> 左中右 三栏自适应 </span><span style="background-color: #f5f5f5; color: #008000">*/</span><span style="background-color: #f5f5f5; color: #800000">
.bd-3-lr </span><span style="background-color: #f5f5f5; color: #000000">{</span><span style="background-color: #f5f5f5; color: #ff0000">
zoom</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">1</span><span style="background-color: #f5f5f5; color: #000000">;</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="background-color: #f5f5f5; color: #ff0000">
padding-left</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">210px</span><span style="background-color: #f5f5f5; color: #000000">;</span><span style="background-color: #f5f5f5; color: #ff0000">
padding-right</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">210px</span><span style="background-color: #f5f5f5; color: #000000">;</span>
<span style="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.bd-3-lr .main </span><span style="background-color: #f5f5f5; color: #000000">{</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="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="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.bd-3-lr .aside-1 </span><span style="background-color: #f5f5f5; color: #000000">{</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="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="background-color: #f5f5f5; color: #ff0000">
margin-left</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="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="background-color: #f5f5f5; color: #ff0000">
left</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff"> -210px</span><span style="background-color: #f5f5f5; color: #000000">;</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"> 210px</span><span style="background-color: #f5f5f5; color: #000000">;</span> <span style="background-color: #f5f5f5; color: #008000">/*</span><span style="background-color: #f5f5f5; color: #008000">IE6 hack</span><span style="background-color: #f5f5f5; color: #008000">*/</span>
<span style="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.bd-3-lr .aside-2 </span><span style="background-color: #f5f5f5; color: #000000">{</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="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="background-color: #f5f5f5; color: #ff0000">
margin-left</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="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="background-color: #f5f5f5; color: #ff0000">
right</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff"> -210px</span><span style="background-color: #f5f5f5; color: #000000">;</span>
<span style="background-color: #f5f5f5; color: #000000">}</span>
<span style="background-color: #f5f5f5; color: #008000">/*</span><span style="background-color: #f5f5f5; color: #008000"> 都在左边，右侧自适应 </span><span style="background-color: #f5f5f5; color: #008000">*/</span><span style="background-color: #f5f5f5; color: #800000">
.bd-3-ll </span><span style="background-color: #f5f5f5; color: #000000">{</span><span style="background-color: #f5f5f5; color: #ff0000">
zoom</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">1</span><span style="background-color: #f5f5f5; color: #000000">;</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="background-color: #f5f5f5; color: #ff0000">
padding-left</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">420px</span><span style="background-color: #f5f5f5; color: #000000">;</span>
<span style="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.bd-3-ll .main </span><span style="background-color: #f5f5f5; color: #000000">{</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="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="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.bd-3-ll .aside-1 </span><span style="background-color: #f5f5f5; color: #000000">{</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="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="background-color: #f5f5f5; color: #ff0000">
margin-left</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="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="background-color: #f5f5f5; color: #ff0000">
left</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff"> -420px</span><span style="background-color: #f5f5f5; color: #000000">;</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"> 0px</span><span style="background-color: #f5f5f5; color: #000000">;</span> <span style="background-color: #f5f5f5; color: #008000">/*</span><span style="background-color: #f5f5f5; color: #008000">IE6 hack</span><span style="background-color: #f5f5f5; color: #008000">*/</span>
<span style="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.bd-3-ll .aside-2 </span><span style="background-color: #f5f5f5; color: #000000">{</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="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="background-color: #f5f5f5; color: #ff0000">
margin-left</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="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="background-color: #f5f5f5; color: #ff0000">
left</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff"> -210px</span><span style="background-color: #f5f5f5; color: #000000">;</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"> 210px</span><span style="background-color: #f5f5f5; color: #000000">;</span> <span style="background-color: #f5f5f5; color: #008000">/*</span><span style="background-color: #f5f5f5; color: #008000">IE6 hack</span><span style="background-color: #f5f5f5; color: #008000">*/</span>
<span style="background-color: #f5f5f5; color: #000000">}</span>
<span style="background-color: #f5f5f5; color: #008000">/*</span><span style="background-color: #f5f5f5; color: #008000"> 都在右边，左侧自适应 </span><span style="background-color: #f5f5f5; color: #008000">*/</span><span style="background-color: #f5f5f5; color: #800000">
.bd-3-rr </span><span style="background-color: #f5f5f5; color: #000000">{</span><span style="background-color: #f5f5f5; color: #ff0000">
zoom</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">1</span><span style="background-color: #f5f5f5; color: #000000">;</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="background-color: #f5f5f5; color: #ff0000">
padding-right</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">420px</span><span style="background-color: #f5f5f5; color: #000000">;</span>
<span style="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.bd-3-rr .main </span><span style="background-color: #f5f5f5; color: #000000">{</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="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="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.bd-3-rr .aside-1 </span><span style="background-color: #f5f5f5; color: #000000">{</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="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="background-color: #f5f5f5; color: #ff0000">
margin-left</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="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="background-color: #f5f5f5; color: #ff0000">
right</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff"> -210px</span><span style="background-color: #f5f5f5; color: #000000">;</span>
<span style="background-color: #f5f5f5; color: #000000">}</span><span style="background-color: #f5f5f5; color: #800000">
.bd-3-rr .aside-2 </span><span style="background-color: #f5f5f5; color: #000000">{</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="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="background-color: #f5f5f5; color: #ff0000">
margin-left</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="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="background-color: #f5f5f5; color: #ff0000">
right</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff"> -420px</span><span style="background-color: #f5f5f5; color: #000000">;</span>
<span style="background-color: #f5f5f5; color: #000000">}</span>
<span style="color: #0000ff"></</span><span style="color: #800000">style</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">head</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">body</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">id</span><span style="color: #0000ff">="hd"</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: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="bd-lft"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="main"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>主内容栏自适应宽度<span style="color: #0000ff"></</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="aside"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>侧边栏固定宽度<span style="color: #0000ff"></</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="bd-rgt"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="main"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>主内容栏自适应宽度<span style="color: #0000ff"></</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="aside"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>侧边栏固定宽度<span style="color: #0000ff"></</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="bd-3-lr"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="main"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>主内容栏自适应宽度<span style="color: #0000ff"></</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="aside-1"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>侧边栏1固定宽度<span style="color: #0000ff"></</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="aside-2"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>侧边栏2固定宽度<span style="color: #0000ff"></</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="bd-3-ll"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="main"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>主内容栏自适应宽度<span style="color: #0000ff"></</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="aside-1"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>侧边栏1固定宽度<span style="color: #0000ff"></</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="aside-2"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>侧边栏2固定宽度<span style="color: #0000ff"></</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="bd-3-rr"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="main"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>主内容栏自适应宽度<span style="color: #0000ff"></</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="aside-1"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>侧边栏1固定宽度<span style="color: #0000ff"></</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">class</span><span style="color: #0000ff">="aside-2"</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>侧边栏2固定宽度<span style="color: #0000ff"></</span><span style="color: #800000">p</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><</span><span style="color: #800000">div </span><span style="color: #ff0000">id</span><span style="color: #0000ff">="ft"</span><span style="color: #0000ff">></span>底部<span style="color: #0000ff"></</span><span style="color: #800000">div</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">body</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"></</span><span style="color: #800000">html</span><span style="color: #0000ff">></span>執行效果：
2.雙飛翼佈置
在不增加額外標籤的情況下，聖杯佈局已經非常完美，聖杯佈局使用了相對定位，以後佈局是有局限性的，而且寬度控制要改的地方也多，那麼有沒其他方法更加簡潔方便呢？
在淘寶UED探討下，增加多一個div就可以不用相對佈局了，只用到了浮動和負邊距，這就是我們所說的雙飛翼佈局。
<span style="color: #0000ff"><span style="color: #ff00ff">DOCTYPE html</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><span style="color: #800000">html</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><span style="color: #800000">head</span><span style="color: #0000ff">></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: #0000ff"><span style="color: #800000">title</span><span style="color: #0000ff">></span>雙飛翼佈局<span style="color: #0000ff"></span><span style="color: #800000">title</span><span style="color: #0000ff">></span>
<span style="color: #0000ff"><span style="color: #800000">style</span><span style="color: #0000ff">></span><span style="background-color: #f5f5f5; color: #800000">
身體</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: #ff0000">margin</span><span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #0000ff">0</span>
.header,.footer<span style="background-color: #f5f5f5; color: #000000"></span>{<span style="background-color: #f5f5f5; color: #800000"></span>width<span style="background-color: #f5f5f5; color: #000000"></span>:<span style="background-color: #f5f5f5; color: #ff0000"></span>100%<span style="background-color: #f5f5f5; color: #000000"></span>;<span style="background-color: #f5f5f5; color: #0000ff"></span> background<span style="background-color: #f5f5f5; color: #000000"></span>: <span style="background-color: #f5f5f5; color: #ff0000">30px</span><span style="background-color: #f5f5f5; color: #000000">;</span><span style="background-color: #f5f5f5; color: #0000ff">clear</span> <span style="background-color: #f5f5f5; color: #000000">:</span><span style="background-color: #f5f5f5; color: #ff0000">both</span><span style="background-color: #f5f5f5; color: #000000">;</span><span style="background-color: #f5f5f5; color: #0000ff">}</span><span style="background-color: #f5f5f5; color: #000000">
.bd</span><span style="background-color: #f5f5f5; color: #ff0000">{</span>
<span style="background-color: #f5f5f5; color: #000000">/*</span><span style="background-color: #f5f5f5; color: #0000ff">padding-left:150px;</span><span style="background-color: #f5f5f5; color: #000000">*/</span>
<span style="background-color: #f5f5f5; color: #000000">/*</span><span style="background-color: #f5f5f5; color: #800000">padding-right:190px;</span><span style="background-color: #f5f5f5; color: #000000">*/</span>
<span style="background-color: #f5f5f5; color: #008000">}</span><span style="background-color: #f5f5f5; color: #008000">
.left</span><span style="background-color: #f5f5f5; color: #008000">{</span><span style="background-color: #f5f5f5; color: #008000">
background</span><span style="background-color: #f5f5f5; color: #008000">:</span><span style="background-color: #f5f5f5; color: #008000"> #E79F6D</span><span style="background-color: #f5f5f5; color"></span></span></span></span></span></span></span>
