CSS:盒模型-复习

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>盒模型</title>
</head>
<body>
    <div class="box">
    </div>
    <style>
        .box {
            width: 200px;
            height: 250px;
            background-color: violet;
            /* border: 10px dashed currentColor; */
            background-clip: content-box;
            /* 顺时针方向 */
            /* padding:5px 10px 15px 20px; */
            /* padding:5px 10px 20px; */
            /* padding:5px  20px; */
            padding:5px;
            /* 改变盒子的计算方式，使得宽高就是设定的,不会破坏布局 */
            box-sizing: border-box;
            /* 边框设置 */
            /* border-top-width: 20px;
            border-top-style: solid;
            border-top-color:red; */
            border: 5px solid red;
        }
        *{
            padding: 0;
            margin: 0;
            box-sizing: border-box;
        }
    </style>
</body>
</html>
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