css设置div铺满全屏幕

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html, body {
margin:0;
padding:0;
}

.container {

height:100%;width:100%;
/*width: 100%;*/
border: 1px solid green;
position:fixed;
background: url(image/login.jpg) no-repeat;text-align:center;

}

要铺满的div加class="container"