.icon {

}

.icon.icon-youtube {
    background: url('../images/icons/icon-youtube.jpg') 0 0 no-repeat;
    height: 30px;
    width: 74px;
    display: inline-block;
    position: relative;
}

.icon.icon-newwindow {
    background: url('../images/icons/icon-newwindow.png') 0 0 no-repeat;
    height: 20px;
    width: 20px;
    display: inline-block;
    position: relative;
}