html, body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: #1a1a2e;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: Arial, sans-serif;
    user-select: none;
}

#game-container {
    display: flex;
    align-items: center;
    justify-content: center;
}

#game-container canvas {
    border: 2px solid #333;
    border-radius: 4px;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.6);
}