html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

body {
    color: rgba(255, 255, 255, 0.87);
    background-color: #1a1a1a;
}

#app {
    width: 100%;
    min-height: 100%;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

#game-container {
    width: 100vw;
    height: min(100vh, 56.25vw);
    max-height: 100vh;
    max-width: calc(100vh * 16 / 9);
}

#game-container canvas {
    display: block;
}