body {
    background-color: #000000;
    color: #00ff00;
    font-family: "Courier New", Courier, monospace;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 2px solid #00ff00;
    padding: 20px;
    box-shadow: 0 0 10px #00ff00, inset 0 0 10px #00ff00;
    background-color: #051505;
}

.header {
    display: flex;
    justify-content: space-between;
    width: 400px;
    margin-bottom: 10px;
    font-size: 20px;
    font-weight: bold;
    text-shadow: 0 0 5px #00ff00;
}

canvas {
    border: 1px solid #005500;
    background-color: #000000;
    box-shadow: inset 0 0 20px #002200;
}

.instructions {
    margin-top: 15px;
    font-size: 14px;
    opacity: 0.7;
}