lovecoding
/
VIP26


			
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div {
            width: 200px;
            height: 200px;
            background: #0f0;
            padding: 25px;
            border: 2px solid #f00;
            margin: 10px;
            box-sizing: border-box;
        }
        /* 
            盒模型
            1.标准盒模型 box-sizing:content-box;
                width = content(内容宽度) + padding +border
                height = content(内容高度) + padding +border


            2.怪异盒模型(IE盒模型) box-sizing:border-box;
                width = content(内容宽度+ padding +border) 
                height = content(内容高度+ padding +border) 

        */
    </style>
</head>
<body>
    <div></div>
</body>
</html>