body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #001933;
    font-family: 'Courier New', Courier, monospace;
    color: #fff;
}

.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.score-container {
    display: flex;
    justify-content: space-between;
    width: 800px;
    margin-bottom: 10px;
    font-size: 20px;
    padding: 10px;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 5px;
}

canvas {
    border: 2px solid #33ff33;
    background-color: #001933;
    box-shadow: 0 0 20px rgba(51, 255, 51, 0.3);
}

.instructions {
    color: #33ff33;
    text-align: center;
    margin-top: 20px;
    font-size: 18px;
    background-color: rgba(0, 0, 0, 0.5);
    padding: 15px;
    border-radius: 5px;
}

#startButton {
    background-color: #33ff33;
    color: #000;
    border: none;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    margin-top: 10px;
    font-family: 'Courier New', Courier, monospace;
    font-weight: bold;
    border-radius: 5px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

#startButton:hover {
    background-color: #66ff66;
    box-shadow: 0 0 10px rgba(51, 255, 51, 0.5);
}