Add Background Image to Div with CSS – Size Position

.mysquare {
border: 1px solid #aaaaaa;
background: #cccccc url(images/dog.png) 50% 50% repeat-x;
color: #222222;
font-weight: bold;
}

To just set height and width of background image set by css

background-size: 80px 60px;

Position
background-position: 190px -3px;