通过css设置body并且全屏

通过css设置body并且全屏

body{
    background: url(images/back03-1920-1080.png) no-repeat center center fixed;
    width:100%;
        height:100%;
        -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    background-position：center;
}