CSS实例:三列等高布局

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三列等高CSS布局的一个实例，
　　修改国外的一个demo，
　　兼容到了IE5.5 和标准的浏览器OperaFirefoxSafari。
　　不过hack太多，不是很喜欢这样做。
全部代码如下：
<?xmlversion="1.0"encoding="gb2312"?>
<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<htmlxmlns="http://www.w3.org/1999/xhtml"lang="zh-CN">
<head>
<metahttp-equiv="Content-Type"content="text/html;charset=gb2312"/>
<metahttp-equiv="Content-Language"content="zh-CN"/>
<metacontent="all"name="robots"/>
<title>3columnlauput</title>
<styletype="text/css"media="screen">

</style>
</head>
<body>
<divid="header">header(testinIE5.5 opera9.0Firefox2.0)</div>
<divid="container">
<divid="center">
<h2>Abstract</h2>
<p>Thewebisconstantlyevolving.Newandinnovativewebsitesarebeingcreatedeveryday,pushingtheboundariesofHTMLineverydirection.HTML4hasbeenaroundfornearlyadecadenow,andpublishersseekingnewtechniquestoprovideenhancedfunctionalityarebeingheldbackbytheconstraintsofthelanguageandbrowsers.</p>
<p>Togiveauthorsmoreflexibilityandinteroperability,andenablemoreinteractiveandexcitingwebsitesandapplications,HTML5introducesandenhancesawiderangeoffeaturesincludingformcontrols,APIs,multimedia,structure,andsemantics.</p>
<p>WorkonHTML5,whichcommencedin2004,iscurrentlybeingcarriedoutinajointeffortbetweenthe<ahref="http://www.w3.org/html/"><abbrtitle="W3CHTMLWorkingGroup">W3CHTMLWG</abbr></a>andthe<ahref="http://www.whatwg.org/"><abbrtitle="WebHypertextApplicationTechnologyWorkingGroup">WHATWG</abbr></a>.ManykeyplayersareparticipatingintheW3Ceffortincludingrepresentativesfromthefourmajorbrowservendors:Apple,Mozilla,Opera,andMicrosoft;andarangeofotherorganisationsandindividualswithmanydiverseinterestsandexpertise.</p>
<p>Notethat<ahref="http://www.w3.org/html/wg/html5/">thespecification</a>isstilla<em>workinprogress</em>andquitealongwayfromcompletion.Assuch,itispossiblethatanyfeaturediscussedinthisarticlemaychangeinthefuture.Thisarticleisintendedtoprovideabriefintroductiontosomeofthemajorfeaturesastheyareinthecurrentdraft.</p>
</div>
<divid="left">
<h2>Abstract</h2>
<p>Thewebisconstantlyevolving.Newandinnovativewebsitesarebeingcreatedeveryday,pushingtheboundariesofHTMLineverydirection.HTML4hasbeenaroundfornearlyadecadenow,andpublishersseekingnewtechniquestoprovideenhancedfunctionalityarebeingheldbackbytheconstraintsofthelanguageandbrowsers.</p>
<p>Togiveauthorsmoreflexibilityandinteroperability,andenablemoreinteractiveandexcitingwebsitesandapplications,HTML5introducesandenhancesawiderangeoffeaturesincludingformcontrols,APIs,multimedia,structure,andsemantics.</p>
<p>WorkonHTML5,whichcommencedin2004,iscurrentlybeingcarriedoutinajointeffortbetweenthe<ahref="http://www.w3.org/html/"><abbrtitle="W3CHTMLWorkingGroup">W3CHTMLWG</abbr></a>andthe<ahref="http://www.whatwg.org/"><abbrtitle="WebHypertextApplicationTechnologyWorkingGroup">WHATWG</abbr></a>.ManykeyplayersareparticipatingintheW3Ceffortincludingrepresentativesfromthefourmajorbrowservendors:Apple,Mozilla,Opera,andMicrosoft;andarangeofotherorganisationsandindividualswithmanydiverseinterestsandexpertise.</p>
<p>Notethat<ahref="http://www.w3.org/html/wg/html5/">thespecification</a>isstilla<em>workinprogress</em>andquitealongwayfromcompletion.Assuch,itispossiblethatanyfeaturediscussedinthisarticlemaychangeinthefuture.Thisarticleisintendedtoprovideabriefintroductiontosomeofthemajorfeaturesastheyareinthecurrentdraft.</p>
</div>
<divid="right">
<h2>Abstract</h2>
<p>Thewebisconstantlyevolving.Newandinnovativewebsitesarebeingcreatedeveryday,pushingtheboundariesofHTMLineverydirection.HTML4hasbeenaroundfornearlyadecadenow,andpublishersseekingnewtechniquestoprovideenhancedfunctionalityarebeingheldbackbytheconstraintsofthelanguageandbrowsers.</p>
<p>Togiveauthorsmoreflexibilityandinteroperability,andenablemoreinteractiveandexcitingwebsitesandapplications,HTML5introducesandenhancesawiderangeoffeaturesincludingformcontrols,APIs,multimedia,structure,andsemantics.</p>
<p>WorkonHTML5,whichcommencedin2004,iscurrentlybeingcarriedoutinajointeffortbetweenthe<ahref="http://www.w3.org/html/"><abbrtitle="W3CHTMLWorkingGroup">W3CHTMLWG</abbr></a>andthe<ahref="http://www.whatwg.org/"><abbrtitle="WebHypertextApplicationTechnologyWorkingGroup">WHATWG</abbr></a>.ManykeyplayersareparticipatingintheW3Ceffortincludingrepresentativesfromthefourmajorbrowservendors:Apple,Mozilla,Opera,andMicrosoft;andarangeofotherorganisationsandindividualswithmanydiverseinterestsandexpertise.</p>
<p>Notethat<ahref="http://www.w3.org/html/wg/html5/">thespecification</a>isstilla<em>workinprogress</em>andquitealongwayfromcompletion.Assuch,itispossiblethatanyfeaturediscussedinthisarticlemaychangeinthefuture.Thisarticleisintendedtoprovideabriefintroductiontosomeofthemajorfeaturesastheyareinthecurrentdraft.</p>
</div>
</div>
<divid="footer">footer</div>
<scriptsrc="http://www.google-analytics.com/urchin.js"type="text/javascript"></script>
<scripttype="text/javascript">
/*<![CDATA[*/
_uacct="UA-496414-1";
/*]]>*/
</script>
</body>
</html>
查看运行效果：

<?xml version="1.0" encoding="gb2312"?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

<title>3 column lauput</title>

<!--

/*<![CDATA[*/

/*-----------------------------------------------------------

@from:http://www.alistapart.com/articles/holygrail

@modify:greengnn 08-01-02

------------------------------------------------------------*/

* {

margin:0;

padding:0;

}

body {

min-width: 550px;

font:normal normal normal 75%/1.25em Verdana, Arial, Helvetica, sans-serif;

color:#333333;

text-align:left;

}

/*layout*/

#container {

padding-left: 200px;

padding-right: 150px;

background:#000;

zoom:1;

}

#container:after {

content:'.';

display: block;

height: 0;

clear: both;

visibility: hidden;

}

#container { display: inline-block; }

/*\*/

#container { display: block; }

/*\*/

#center, #left, #right {

position: relative;

float: left;

}

* html #center {

}

#center { width: 100%; }

#left {

width: 200px;

right: 200px;

margin-left: -100%;

}

#right {

width: 150px;

margin-right: -150px;

}

#footer { clear: both; }

/*Equal-height */

#container { overflow: hidden; }

#footer {

overflow:hidden;

position: relative;

}

/*IE7 hack*/

* html #center {

position:static;

}

* html #left {

position:static;

}

* html #right {

position:static;

}

* html #container {

position:relative;

overflow:hidden;

}

* html #left {

position:relative;

}

/*End IE7 hack*/

/*Start Hack for Opera8*/

/*\*/

#container #center, #container #left, #container #right {

padding-bottom: 32767px !important;

margin-bottom: -32767px !important;

}

@media all and (min-width: 0px) {

#container #center, #container #left, #container #right {

padding-bottom: 0 !important;

margin-bottom: 0 !important;

}

#center:before, #left:before, #right:before {

content: '[DO NOT LEAVE IT IS NOT REAL]';

display: block;

background: inherit;

padding-top: 32767px !important;

margin-bottom: -32767px !important;

height: 0;

}

/**/

/*End Hack for Opera8*/

/*just to see*/

#header, #footer {

font-size:40px;

line-height:40px;

text-align:center;

font-weight:bold;

color:#cccccc;

background:#666666;

}

#center { background:#eeeeee; }

#left { background:#FF9933; }

#right { background:#0099CC; }

/*]]>*/

-->

</style>

</head>

<body>

<div id="header">header(test in IE5.5  opera9.0 Firefox 2.0)</div>

<h2>Abstract</h2>

<p>The web is constantly evolving. New and innovative websites are being created     every day, pushing the boundaries of HTML in every direction. HTML 4 has     been around for nearly a decade now, and publishers seeking new techniques to     provide enhanced functionality are being held back by the constraints of     the language and browsers.</p>

<p>To give authors more flexibility and interoperability, and enable  more interactive and exciting websites and applications, HTML 5  introduces and enhances a wide range of features including form  controls, APIs, multimedia, structure, and semantics.</p>

<p>Work on HTML 5, which commenced in 2004, is currently being carried out in     a joint effort between the <a href="http://www.w3.org/html/"><abbr title="W3C HTML Working Group">W3C HTML     WG</abbr></a> and     the <a href="http://www.whatwg.org/"><abbr title="Web Hypertext Application Technology Working Group">WHATWG</abbr></a>.     Many key players are participating in the W3C effort including representatives     from the four major browser vendors: Apple, Mozilla, Opera, and Microsoft;     and a range of other organisations and individuals with many diverse interests     and expertise.</p>

<p>Note that <a href="http://www.w3.org/html/wg/html5/">the     specification</a> is still a <em>work in progress</em> and quite a long     way from completion. As such, it is possible that any feature discussed in     this article may change in the future. This article is intended to provide     a brief introduction to some of the major features as they are in the current     draft.</p>

</div>

<h2>Abstract</h2>

</div>

<h2>Abstract</h2>

</div>

<div id="footer">footer</div>

/*<![CDATA[*/

_uacct = "UA-496414-1";

/*]]>*/

</script>

</body>

</html>

[ 可先修改部分代码再运行查看效果 ]

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