使图片在盒子中水平居中,垂直居中

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>sunshine</title>
    <style>
        *{
            padding: 0;
            margin: 0;
        }
        div{
            width: 100%;
            height: 100%;
            position: fixed;
            margin: 0 auto;
            text-align:center;
            background: url("http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_sky.jpg") no-repeat;
            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="https://images.cnblogs.com/cnblogs_com/heyiming/947196/t_a.jpg" alt=""/>
        </div>
</body>
</html>
原文地址:https://www.cnblogs.com/heyiming/p/6397093.html