body {
background-color: #373656;
}

#calipso {
width: 100%; height: 100%; top: 0; left: 0;
background: url(images/calipso_group.jpg) no-repeat center top; position: fixed; z-index: -1;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}