第一种是
代码如下
复制代码
<div id="main" style="display:inline-block;height:auto;background-color:#006699">
<!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=gb2312" />
<title>无标题文档</title>
</head>
<body>
<div id="main" style="background-color:#006699;float:left;">
<div id="a" style="width:200px; height:300px; background-color:#006666; float:left"></div>
<div id="b" style="width:700px; height:550px; background-color:#009999;float:left"></div>
</div>
</body>
</html>
第二种方法就是clear:bothi清除浮动
代码如下
复制代码
<!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=gb2312" />
<title>无标题文档</title>
</head>
<body>
<div id="main" style="background-color:#006699">
<div id="a" style="width:200px; height:300px; background-color:#006666; float:left"></div>
<div id="b" style="width:700px; height:250px; background-color:#009999;float:left"></div>
<div style="clear:both"></div>
</div>
</body>
</html>
