<!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>
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