HTMLify

body,
html,
#app {
    margin: 0;
    width: 100%;
    height: 100%;
}

#app {
    overflow: hidden;
    touch-action: pan-up;
    color: #ffffff;
    font-family: "Montserrat", sans-serif;
    text-align: center;
    text-shadow: 0 0 5px #ffffff, 0 0 20px #000, 0 0 30px #000;
}

#app h1 {
    --fontSize: 60px;
    --lineHeight: 80px;
    width: auto;
    height: calc(2 * var(--lineHeight));
    line-height: var(--lineHeight);
    margin: calc(50vh - var(--lineHeight)) auto 0;
    font-size: var(--fontSize);
}

#app a {
    margin-top: 10px;
    display: inline-block;
    text-decoration: none;
    color: #fff;
}

#app canvas {
    display: block;
    position: fixed;
    z-index: -1;
    top: 0;
}