<!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>無標題文檔</title><style type="text/css">*{margin:0;padding:0;}#wrap{width:960px;;margin:0 auto;}.mainbody{width:100%;height:400px;background:#FC0;overflow:hidden;}.box1{width:130px;height:50px;background:red;float:left;}.box2{width:330px; height:150px;background:blue;}.box3{height:50px;background:purple; }?</style></head><body><div id="wrap"><div class="mainbody"><div class="box1">盒子1</div><div class="box2">盒子2</div>?<div class="box3">盒子3</div>?</div></div></body></html>
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