body, html {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f0f0f0;
    font-family: 'Press Start 2P', cursive;
}
#gameCanvas {
    background-color: #87ceeb;
    border: 2px solid #000;
}
#instructions {
    position: absolute;
    top: 10px;
    left: 10px;
    color: #333;
    font-size: 14px;
}
#score {
    font-weight: bold;
}