osh-js/source/core/resources/css/ol.css

OSH javascript Toolkit

.map:-webkit-full-screen {
    height: 100%;
    margin: 0;
}
.map:-ms-fullscreen {
    height: 100%;
}
.map:fullscreen {
    height: 100%;
}
/* position the rotate control lower than usual */
.ol-rotate {
    top: 3em;
}