<!DOCTYPE html><!--h5写法 -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<style type="text/css">
div{width:300px;
height:40px;
background-color:#9c3;
}
.chge{width:300px;
height:40px;
background-color:#9c3;
line-height:40px;
}
</style>
</head>
<body>
<div>行高line-height</div>
<p></p>
<div class="chge">行高line-height</div>
</body>
</html>
