css图片上下居中 

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>1111111</title>
    <style>
        *{
            padding: 0;
            margin: 0;
        }
        div{
            width: 100%;
            height: 100%;
            position: fixed;
            margin: 0 auto;
            text-align:center;
            background-size: 100% 100%;
        }
        span{
            height: 100%;
            display: inline-block;
            vertical-align: middle;
        }
        img{
            vertical-align: middle;
        }
    </style>
</head>
<body>
        <div>
            <span></span>
            <img src="./aaaa.jpg" alt=""/>
        </div>
</body>
</html>
posted @ 2019-12-27 14:06  王希有  阅读(489)  评论(0)  编辑  收藏  举报