html, body {
    width: 100%;
    height: 100%;
    padding: 0;
    margin: 0;
    overflow: hidden;
    position: fixed;
    font-family: "Segoe WP", "Segoe UI", "Verdana", "Arial";
    touch-action: none;
    -ms-touch-action: none;
    background-color: #333;
}

#renderCanvas {
    width: 100%;
    height: 100%;
    outline: none;
    opacity: 0;
}

#notSupported {
    color: #fff;
    width: 100%;
    height: 70px;
    position: absolute;
    top: 50%;
    margin-top: -30px;
    background-color: #111;
    border: 1px solid #555;
    text-align: center;
    padding-top: 10px;
    font-size: 30px;
    z-index: 3;
    cursor: default;
}

.hidden {
    display: none;
}