html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #000000;
}

#app,
#game-container {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

@supports (height: 100dvh) {
    #app,
    #game-container {
        height: 100dvh;
    }
}

#game-container canvas {
    display: block;
    margin: 0 auto;
}