html { 
   height: 100%; 
} 
body { 
   background: #fbc79f url(http://sweetpeople.dyndns.org/cas-style/getImage?id=10) no-repeat scroll center center / cover; 
   -webkit-background-size: cover;
   -moz-background-size: cover;
   height: 100%; 
   min-height: 100%; 
}