html, body {
    margin: 0;
    height: 100%;
    overflow: hidden;
    overscroll-behavior: none;
    touch-action: none;
    background: #0b0f14;
}

body {
    padding: 0;
    color: rgba(255, 255, 255, 0.87);
}

#app {
    width: 100%;
    height: 100vh;
    /* dvh wins where supported: on iOS Chrome 100vh includes the area under the bottom
       toolbar, hiding the lowest ~100 logical px of the FIT canvas (WP9a). */
    height: 100dvh;
    box-sizing: border-box;
    padding-bottom: env(safe-area-inset-bottom);
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

canvas {
    touch-action: none;
    display: block;
}