html, body {
    padding: 0;
    margin: 0;
}

body {
    display: flex;
    justify-content: center;
    background: radial-gradient(#2d2d30, #1b1b1c);
}

#container > * {
    width: 100%;
    height: 100%;
    aspect-ratio: 4 / 3;
}

#container {
    display: flex;
    width: 100%;
    height: 100vh;
}