CSS实现垂直居中的5种方法（6）

哪个方法？

我最喜欢的是方法三，缺点不多。因为 content 会清除浮动，所以可以在它上面放置别的元素，并且当窗口缩放时，
居中的 content 不会把另外的元素盖住。看例子。

<div id="top"><h1>Title</h1></div><div id="content"> Content Here</div>

#floater {float:left; height:50％; margin-bottom:-120px;}#top  {float:right; width:100％; text-align:center;}#content {clear:both; height:240px; position:relative;}

现在你知道是怎么回事了，现在我们开始创建一个简单但是有趣的网站。最终的样子是这样的：

步骤一
以语义化标签开始是很好的。下面是我们的页面构成：

#floater/*把 content 置中*/#contred/*centre 盒*/#side#logo#nav/*无序列表*/#content#bottom/*放置版权等*/

这是我用到的 xhtml 代码：

A Centred Company<div id="centered"><div id="side"><div id="logo">   <strong><span>A</span> Company</strong></div><ul id="nav"> <li><a href="#">Home</a></li> <li><a href="#">Products</a></li> <li><a href="#">Blog</a></li> <li><a href="#">Contact</a></li> <li><a href="#">About</a></li></ul></div><div id="content"><h1>Page Title</h1>Holisticly re-engineer value-added outsourcing after process-centric collaboration and idea-sharing.   Energistically simplify impactful niche markets via enabled imperatives.   Holisticly predominate premium innovation after compelling scenarios.   Seamlessly recaptiualize high standards in human capital with leading-edge manufactured products.   Distinctively syndicate standards compliant schemas before robust vortals.   Uniquely recaptiualize leveraged web-readiness vis-a-vis out-of-the-box information.<h2>Heading 2</h2>Efficiently embrace customized web-readiness rather than customer directed processes.   Assertively grow cross-platform imperatives vis-a-vis proactive technologies.   Conveniently empower multidisciplinary meta-services without enterprise-wide interfaces.   Conveniently streamline competitive strategic theme areas with focused e-markets.   Phosfluorescently syndicate world-class communities vis-a-vis value-added markets.   Appropriately reinvent holistic services before robust e-services.</div></div><div id="bottom"> Copyright notice goes here</div>