html,
body {
    margin: 0;
    height: 100%;
    overflow: hidden;
    overscroll-behavior: none;
}

body {
    padding: 0;
    color: rgba(255, 255, 255, 0.87);
    background-color: #0f0f0f;
}

#app {
    width: 100%;
    height: 100vh; /* fallback for browsers without dvh support (older Safari) */
    height: 100dvh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    touch-action: none; /* stick-dragging must never scroll/bounce the page */
    -webkit-user-select: none;
    user-select: none;
}