.olMap.fullscreen, .olMap:-webkit-full-screen {
    height: 100% !important;
    width: 100% !important;
    position: fixed;
    left: 0;
    top: 0;
}

.olControlFullScreenItemActive, .olControlFullScreenItemInactive {
    height: 20px;
    width: 20px;
    background-image: url(fullscreen.png);
    cursor: pointer;
}

.olControlFullScreenItemActive {
    background-position: 0 -25px;
}

.olControlFullScreenItemInactive {
    background-position: 0 0;
}