<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>DIV+CSS实现两边固定宽度,中间自适应宽度-天魅设计博客</title> <style> body{ margin:0; padding:10px;} #head{ margin-bottom:10px; height:50px; background-color:#999999} #main{} #left{ width:200px; float:left;margin-right:-200px; background-color:#FF9900} #mid{ width:auto;background:#00FF00;margin:0 220px;border:1px solid #000;} #right{ width:200px;margin-left:-200px; float:right; background-color:#CCCC00} #foot{ margin-top:10px; clear:both; height:50px; background-color:#CCCCCC} </style> </head> <body> <div id="head">我是头部</div> <div id="main"> <div id="left">我是左边,宽:200px</div> <div id="right">我是右边,宽:200px</div> <div id="mid">我是中间,宽自适应</div> </div> <div id="foot">我是底部</div> </body> </html>