body
{
    background-image  :url(images/DWBackground.jpg);
     background-repeat:no-repeat;
     border-width: 0;
     border-spacing: 0;
     background-position: center center;
     font-family:微软雅黑;
     font-size: 12px;
     background-size: cover;
     -o-background-size: cover;    
}