trycss_padding_sides 在线代码实例

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>W3Cschool教程(w3cschool.cn)</title>
<style>
p
{
    background-color:yellow;
}
p.padding
{
    padding-top:25px;
    padding-bottom:25px;
    padding-right:50px;
    padding-left:50px;
}
</style>
</head>
<body>
<p>这是一个没有指定填充的段落。</p>
<p class="padding">这是一个有指定填充的段落。</p>
</body>
</html>
 
 
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运行结果
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