垂直水平居中的几种方式，其他方式还有很多，不再列举 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        /*第一种垂直水平居中*/
        .father{
            width: 300px;
            height: 300px;
            background: red;
            display: table-cell;
            vertical-align: middle;


        }
        .child{
            width: 100px;
            height: 100px;
            margin:0 auto;
        }

        /*第二种垂直水平居中*/
        .father{
            display: flex;
            justify-content: center;
            align-items: center;
            width: 300px;
            height: 300px;
            background: red;
        }
        .child{
            width: 100px;
            height: 100px;
        }


        /*第三种垂直水平居中*/
        .father{
            width: 300px;
            height: 300px;
            background: red;
            position: relative;
        }
        .child{
            width: 100px;
            height: 100px;
            position: absolute;
            left: 0;
            top: 0;
            right: 0;
            bottom: 0;
            margin: auto;
          }

        /*第四种垂直水平居中*/
        .father{
            width: 300px;
            height: 300px;
            background: red;
            position: relative;
        }
        .child{
            width: 100px;
            height: 100px;
            position: absolute;
            left: 50%;
            top: 50%;
            margin-top: -50px;    /* 高度的一半 */
            margin-left: -50px;    /* 宽度的一半 */
        }
    </style>
</head>
<body>

<div class="father">
    <div class="child">123</div>
</div>

</body>
</html>

 

posted @ 2019-12-08 22:16  黑夜蓝天  阅读(166)  评论(0)  编辑  收藏  举报