body {
 height: 100%;
 background-color: #ffffff;
 background-image: url("../images/bg.jpg");
 background-repeat: no-repeat,			no-repeat,			no-repeat;
 background-size: cover, cover,				cover;
 background-position: top left,		center center,		bottom center;
 background-attachment: fixed,			fixed,				fixed;
}