<!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>无标题文档</title> <style type="text/css"> #apDiv1 { position: absolute; width: 100%; height: 50px; z-index: 1; background-color:#F00; } #apDiv2 { position: relative; margin:auto; width:960px; height: 50; z-index: 2; background-color:#3F6 } .apDivx { position: relative; float:left; width: 99px; height: 50px; z-index: 3; background-color:#FF0; overflow:hidden; } .apDivy { position: relative; float:left; width: 99px; height: 50px; z-index: 3; background-color:#FF0; } #apDiv4 { position: absolute; top: 50px; width: 200px; height: 91px; z-index: 2; background-color:#F3C } </style> </head> <body> <div id="apDiv1"> <div id="apDiv2"> <div id="apDiv3" class="apDivx" onmouseover="this.className='apDivy'" onmouseout="this.className='apDivx'"> 首页 <div id="apDiv4"> 战争<br> 剧情<br> 爱情<br> </div> </div> <div id="apDiv3" class="apDivx" onmouseover="this.className='apDivy'" onmouseout="this.className='apDivx'"> 电影 <div id="apDiv4"> 速度与激情7<br> 复仇者联盟2<br> 左耳<br> </div> </div> </div> </div> </body> </html>