body {
    font-family: Helvetica sans-serif;
    padding: 0;
    margin: 0;
    background-color: #222;
    overflow: hidden;
    -webkit-user-select: none;
       -moz-user-select: none;
         -o-user-select: none;
        -ms-user-select: none;
            user-select: none;
}

canvas {
    position: absolute;
    top: 0;
    left: 0;
}

.info {
    position: absolute;
    top: 0;
    left: 0;
    padding: 5px 15px;
    color: #eee;
    font-size: 13px;
    background-color: rgba(0, 0, 0, .5);
}