body {
    display: flex;
    flex-direction: column; /* Stack elements vertically */
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
    font-family: sans-serif;
}

h1 {
    margin-bottom: 10px;
    color: #333;
}

#gameCanvas {
    border: 5px solid #333;
    background-color: #9cda7b; /* Light green game area */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.score-container {
    font-size: 1.5em;
    margin-bottom: 10px;
    color: #555;
}

.instructions {
    margin-top: 10px;
    color: #777;
    font-size: 0.9em;
}

#restartButton {
    margin-top: 15px;
    padding: 10px 20px;
    font-size: 1em;
    cursor: pointer;
    background-color: #4CAF50; /* Green */
    color: white;
    border: none;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s ease;
}

#restartButton:hover {
    background-color: #45a049;
}

#restartButton:active {
    background-color: #3e8e41;
}