css的margin与padding练习 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>margin</title>
    <style>
        body{
            margin:0px;
        }
        .div1{
            background-color: aqua;
            height:300px;
            width:300px;
            border:1px solid greenyellow;
            /*通过margin将100X100小盒子放在300X300大盒子中间*/
            padding:200px 0px 0px 200px;
        }
        .div2{
            background-color: blueviolet;
            height:100px;
            width:100px;
            /*通过margin将小盒子放在大盒子中间*/
            /*margin:100px;*/
        }
    </style>
</head>
<body>
<div class="div1">
    <div class="div2"></div>
    <!--<div class="div2"></div>-->
</div>

</body>
</html>
posted @ 2020-01-08 17:07  Stary_tx  阅读(210)  评论(0)  编辑  收藏  举报