body {
    max-width: 40em;
    margin: auto;
}
#container {
    border: 3px solid black;
    width: 700px;
    height: 400px;
}
#fullscreen, #entervr {
    display: none;
}

#container {
    position: relative;
}
#touch-overlay {
    border: 0px solid black;
    position: absolute;
    bottom: 0;
    top:0;
    left:0;
    right:0;
    display: none;
    visibility: hidden;
}
#touch-overlay button {
    position: absolute;
    width: 15vmin;
    height: 15vmin;
    padding:0;
    border: 1px solid black;
}
#touch-overlay #left {
    bottom: 7.5vmin;
    left: 0vmin;
}
#touch-overlay #right {
    bottom: 7.5vmin;
    left: 30vmin;
}
#touch-overlay #up {
    bottom: 15vmin;
    left: 15vmin;
}
#touch-overlay #down {
    bottom: 0em;
    left: 15vmin;
}
#touch-overlay #exit-fullscreen {
    position: absolute;
    top: 0vmin;
    right: 0vmin;
}
#touch-overlay #menu-button {
    position: absolute;
    bottom: 0vmin;
    right: 0em;
}
#touch-overlay #jump-button {
    position: absolute;
    bottom: 15vmin;
    right: 0em;
}

body.fullscreen #container {
    border-width:0;
    position: absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
}


button {
    border: 1px solid black;
    border-radius: 0.25em;
    background-color: aqua;
}
button.selected {
    background-color: darkblue;
    color:white;
}