App下载
实例代码( Tip: 登录后体验更佳 )
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<style type="text/css">
div.ex
{
width:220px;
padding:10px;
border:5px solid gray;
margin:0px;
}
</style>
</head>
<body>
<img src="250px.gif" width="250" height="1" /><br /><br />
<div class="ex">
线 250px <br />
250px
</div>
<p><b>:</b> DOCTYPE ( html), </p>
</body>
</html>
 
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运行结果