* { margin: 0; padding: 0;}

body, html { height:100%; }

#glCanvas {
    position:absolute;
    width:100%;
    height:100%;
}

.marker {
    background-image: url(marker.svg);
    background-size: 20px 40px;
    position: absolute;
    width: 20px;
    height: 40px;
    opacity: 0.75;
    font-size: 12px;
    padding-top: 3px;
    text-align: center;
    user-select: none;
    color: black;
    background-repeat: no-repeat;
}