意指用最少的代码实现到兼容Ie6的现代布局
效果如图所示，用到了浮动负边距和相对定位三种知识
代码如下
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <title>圣杯布局</title> <style type="text/css"> body {background-color: #ffffff; font-size:14px;} #hd, #ft {padding:20px 3px; background-color: #cccccc; text-align: center;} .bd-lft, .bd-rgt, .bd-3-lr, .bd-3-ll, .bd-3-rr {margin:10px 0; min-width:400px;} .main {background-color: #03a9f4; color:#ffffff;} .aside, .aside-1, .aside-2 {background-color: #00bcd4; color:#ffffff;} p {margin:0; padding:20px; text-align: center;} /* 左侧栏固定宽度，右侧自适应 */ .bd-lft { zoom:1; overflow:hidden; padding-left:210px; } .bd-lft .aside { float:left; width:200px; margin-left:-100%; /*= -100%*/ position:relative; left:-210px; /* = -parantNode.paddingLeft */ _left: 0; /*IE6 hack*/ } .bd-lft .main { float:left; width:100%; } /* 右侧栏固定宽度，左侧自适应 */ .bd-rgt { zoom:1; overflow:hidden; padding-right:210px; } .bd-rgt .aside { float:left; width:200px; margin-left:-200px; /* = -this.width */ position:relative; right:-210px; /* = -parantNode.paddingRight */ } .bd-rgt .main { float:left; width:100%; } /* 左中右 三栏自适应 */ .bd-3-lr { zoom:1; overflow:hidden; padding-left:210px; padding-right:210px; } .bd-3-lr .main { float:left; width:100%; } .bd-3-lr .aside-1 { float: left; width:200px; margin-left: -100%; position:relative; left: -210px; _left: 210px; /*IE6 hack*/ } .bd-3-lr .aside-2 { float: left; width:200px; margin-left: -200px; position:relative; right: -210px; } /* 都在左边，右侧自适应 */ .bd-3-ll { zoom:1; overflow:hidden; padding-left:420px; } .bd-3-ll .main { float:left; width:100%; } .bd-3-ll .aside-1 { float: left; width:200px; margin-left: -100%; position:relative; left: -420px; _left: 0px; /*IE6 hack*/ } .bd-3-ll .aside-2 { float: left; width:200px; margin-left: -100%; position:relative; left: -210px; _left: 210px; /*IE6 hack*/ } /* 都在右边，左侧自适应 */ .bd-3-rr { zoom:1; overflow:hidden; padding-right:420px; } .bd-3-rr .main { float:left; width:100%; } .bd-3-rr .aside-1 { float: left; width:200px; margin-left: -200px; position:relative; right: -210px; } .bd-3-rr .aside-2 { float: left; width:200px; margin-left: -200px; position:relative; right: -420px; } </style> </head> <body> <div id="hd">头部</div> <div class="bd-lft"> <div class="main"> <p>主内容栏自适应宽度</p> </div> <div class="aside"> <p>侧边栏固定宽度</p> </div> </div> <div class="bd-rgt"> <div class="main"> <p>主内容栏自适应宽度</p> </div> <div class="aside"> <p>侧边栏固定宽度</p> </div> </div> <div class="bd-3-lr"> <div class="main"> <p>主内容栏自适应宽度</p> </div> <div class="aside-1"> <p>侧边栏1固定宽度</p> </div> <div class="aside-2"> <p>侧边栏2固定宽度</p> </div> </div> <div class="bd-3-ll"> <div class="main"> <p>主内容栏自适应宽度</p> </div> <div class="aside-1"> <p>侧边栏1固定宽度</p> </div> <div class="aside-2"> <p>侧边栏2固定宽度</p> </div> </div> <div class="bd-3-rr"> <div class="main"> <p>主内容栏自适应宽度</p> </div> <div class="aside-1"> <p>侧边栏1固定宽度</p> </div> <div class="aside-2"> <p>侧边栏2固定宽度</p> </div> </div> <div id="ft">底部</div> </body> </html>