body {
    margin: 0;
    border: 0;
    padding: 0;
    display: block;
    width: 100svw;
    height: 100vh;
    height: 100svh;
    overflow: hidden;
    background: black;
    color: white;
}

#canvas {
    width: 100%;
    height: 100%;
}

.error-message {
    position: absolute;
    font-family: sans-serif;
    font-size: 4rem;
    left: 50%;
    top: 50vh;
    top: 50dvh;
    display: inline-block;
    line-height: 4.5rem;
    text-align: center;
    transform: translate(-50%, -100%);
}

div.no-script {
    top: 0;
    left: 0;
    position: absolute;
    display: block;
    background: white;
    width: 100vw;
    width: 100dvw;
    height: 100vh;
    height: 100dvh;
    margin: 0;
    border: 0;
}