background: background-color background-image background-repeat background-position / background-size
div
{
background: #00FF00 url(bgimage.gif) no-repeat 0 0 / 100% 100%;
background: #00FF00 url(bgimage.gif) no-repeat center top / 100% auto;
background: #00FF00 url(bgimage.gif) no-repeat 0 0 / auto 50%;
}