trycss3_box-sizing_new 在线代码实例

实例代码( Tip: 登录后体验更佳 )
运行代码

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>W3Cschool教程(w3cschool.cn)</title> 
<style> 
.div1 {
    width: 300px;
    height: 100px;
    border: 1px solid blue;
    box-sizing: border-box;
}
.div2 {
    width: 300px;
    height: 100px;    
    padding: 50px;
    border: 1px solid red;
    box-sizing: border-box;
}
</style>
</head>
<body>
<div class="div1">两个 div 现在是一样大小的!</div>
<br>
<div class="div2">W3Cschool教程!</div>
</body>
</html>
 
 
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运行结果
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