


CSS layout is centered and aligned, with fixed width on the left and adaptive on the right.
CSS页面布局是web前端开发的最基本的技能,本文将介绍一些常见的布局方法,涉及到盒子布局,column布局,flex布局等内容。本文中,你可以看到一些水平垂直居中的方法,左侧固定宽度,右侧自适应的一些方法。如果你有更多关于布局方面的技巧,欢迎留言交流。一、神奇的居中 经常看到有一些面试题问如何实现水平垂直居中,还要求用多种方法。唉唉唉!下面介绍一下我所知道的实现居中的方法。(1)父元素relative;子元素absolute,top:50%;left:50%;margin-left:-自己宽度的一半;margin-right:-自己高度的一半。
nbsp;html> <meta> <title>水平垂直居中2</title> <style> .container{ width: 100%; height: 500px; background: red; position: relative; } .child{ width: 300px; height: 300px; background: blue; position: absolute; left: 50%; margin-left: -150px; top: 50%; margin-top: -150px; } </style> <div> <div></div> </div>
This method requires knowing the width and height of the child elements.
(2)父元素:relative;子元素:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
nbsp;html> <meta> <title>水平垂直居中3</title> <style> .container{ background: red; width: 100%; height: 500px; position: relative; } .child{ background: blue; width: 300px; height: 300px; position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); } </style> <div> <div></div> </div>
<span style="font-size: 14px; font-family: Microsoft YaHei">此法跟上面的相似,但是用到了transform,好处是不需要知道子元素的宽高,兼容性方面我查了一下,看着办吧。<br><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/013/e6f851faee59ab9abba51c883c21e708-0.png" class="lazy" alt="CSS layout is centered and aligned, with fixed width on the left and adaptive on the right." style="max-width:90%" style="max-width:90%" title="CSS layout is centered and aligned, with fixed width on the left and adaptive on the right."><br><strong>(3)父元素:<a href="http://www.php.cn/wiki/927.html" target="_blank">display</a>: flex;justify-content: center;align-items: center;</strong></span>
nbsp;html> <meta> <title>水平垂直居中1</title> <style> .container{ width: 100%; height: 400px; background: red; display: flex; justify-content: center; align-items: center; } .child{ width: 300px; height: 300px; background: blue; } </style> <div> <div></div> </div>
This method seems a bit high-end, and you don’t need to pay attention to the child elements at all.
(4)水平居中的方法,父元素:text-align:center
nbsp;html> <meta> <title>水平垂直居中4</title> <style> .container{ background: red; width: 100%; height: 500px; text-align: center; } .child{ background: blue; width: 300px; height: 300px; margin: auto; } </style> <div> <div></div> </div>
<span style="font-size: 14px; font-family: Microsoft YaHei">如果子元素里的文字不要水平居中的话,那么用此法将遇到不少麻烦。<strong>(5)水平居中方法,子元素:margin:0 auto;这个好说,不上代码了</strong>好了,关于居中问题就说这么多,如果你还有更好的方法,请告诉我。<br><strong>二、左侧固定宽度,右侧自适应</strong>这是一个比较常见的需求,下面介绍几种实现方法。 (1)左边定宽,左<a href="http://www.php.cn/code/11748.html" target="_blank">浮动</a>,右边不指定宽。</span>
nbsp;html> <meta> <title>做固定,右边自适应</title> <style> body{ margin: 0; } .aside{ background: red; width:200px; height: 500px; float: left; } .main { background: blue; height: 500px; } </style> <div> 我是左边的 </div> <div> 我是主体 我是主体 我是主体 我是主体 我是主体 </div>
I accidentally discovered this method while doing experiments, which was an unexpected surprise.
(2) Use padding to occupy the space
nbsp;html> <meta> <title>左侧固定右侧自适应</title> <style> .container { padding-left: 200px; width: 100%; position: relative; } .left{ position: absolute; left: 0; right: 0; background: red; height: 500px; width: 200px; } .right{ background: blue; width: 100%; height: 500px; } </style> <div> <div>zuobian</div> <div> 新华社俄罗斯喀山3月23日电(记者 魏良磊)中俄执政党对话机制第六次会议和第五届中俄政党论坛23日在俄罗斯喀山举行。和俄罗斯联邦总统普京分别致贺信。 </div> </div>
Note that absolute is separated from the document flow . .right's 100% is relative to the content width of the parent container, not the entire width.
(3) Parent: display:flex; left fixed width; right flex: 1. ok
nbsp;html> <meta> <title>左边固定,右边自适应</title> <style> .container{ display: flex; } .left{ width: 200px; height: 500px; background: red; } .right{ background: blue; height: 500px; flex: 1; } </style> <div> <div>zuobian</div> <div> 新华社俄罗斯喀山3月23日电(记者 魏良磊)中俄执政党对话机制第六次会议和第五届中俄政党论坛23日在俄罗斯喀山举行。和俄罗斯联邦总统普京分别致贺信。 </div> </div>
弹性盒子很强,有木有。但是有的是要加前缀的,哪些要加自己查去,有一次做实验,电脑样式正确,手机就是不对,搞了好半天。
(4)父:display:table;左右:display:table-cell;左:定宽。
nbsp;html> <meta> <title>左边固定,右边自适应</title> <style> .container{ display: table; } .left{ width: 200px; height: 500px; background: red; display: table-cell; } .right{ background: blue; height: 500px; display: table-cell; } </style> <div> <div>zuobian</div> <div> 新华社俄罗斯喀山3月23日电(记者 魏良磊)中俄执政党对话机制第六次会议和第五届中俄政党论坛23日在俄罗斯喀山举行。罗斯联邦总统普京分别致贺信。 </div> </div>
据说这是一种古老的方法,我咋不知道呢?可能我比较年轻吧!
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