1.0 <style>
*{
margin: 0;
padding: 0;
}
div{
width:100%;
height: 100%;
background: yellow;
position: absolute;
}
</style>
<body>
<div></div>
</body>
2.0
html,body{
width: 100%;
height: 100%;
}
div{
width:100%;
height: 100%;
background: yellow;
}原文：http://www.cnblogs.com/lieaiwen/p/6950627.html