#game-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    display: block;
}

#hud {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.2rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
    pointer-events: none;
}

#hud-score {
    font-size: 1.8rem;
    font-weight: 200;
    letter-spacing: 0.1em;
    color: #fff;
}

#hud-lives {
    font-size: 1.4rem;
    letter-spacing: 0.3em;
    color: #fff;
}