body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background: #f5f5f5;
    color: #333;
}

h1 {
    text-align: center;
    color: #222;
    margin-bottom: 30px;
}

nav {
    text-align: center;
    margin-bottom: 20px;
}

nav a {
    text-decoration: none;
    color: #007BFF;
    font-weight: bold;
    margin: 0 10px;
}

nav a:hover {
    color: #0056b3;
}

canvas {
    display: block;
    margin: 30px auto;
    max-width: 800px;
    background: #fff;
    border: 1px solid #ccc;
    padding: 15px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}