lovecoding
/
Vip0525


			
				
					
						
						
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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;
            border: 2px solid #000;
            background: #00f;
            padding: 10px;
            margin: 10px;
            box-sizing: border-box;
            /* box-sizing: content-box; */
        }
    </style>
</head>
<body>
    <!-- 
        盒模型：
            标准盒模型：box-sizing: content-box
                width = contentWidth + border + padding;
            怪异盒模型: box-sizing: border-box
                width = contentWidth(弹性contentWidth + border + padding)
     -->        
    <div></div>
</body>
</html>