html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}
body {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background: url("sprites/bg.png") no-repeat center center / cover;
}
.game-container {
    width: min(95vw, calc(95vh * 3), 600px);
    aspect-ratio: 3 / 1;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 2px solid black;
    border-radius: 10px;
    box-sizing: border-box;
    overflow: hidden;
    background-color: white;
    box-shadow: 0 10px 30px rgba(0,0,0,0.35);
    touch-action: none;
}
canvas {
    width: 100% !important;
    height: 100% !important;
    display: block;
    touch-action: none;
}

@media (max-aspect-ratio: 1/1) {
    body {
        background: url("sprites/bg.png") no-repeat center center / 100% 100%;
    }
}