body { height: 100%; margin: 0; padding: 0; }
#map { position: absolute; top: 0; bottom: 0; width: 100%; }

#hide-UI{

    position: absolute;
    width: 109px;
    height: 40px;
    left: calc(50% - 109px/2 + 13px);
    top: 75px;

}

#menu{
    position: absolute;
    width: 300px;
    height: 146px;
    left: calc(10% - 109px/2 + 13px);
    top: 200px; 

}