body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background-color: #1e1e1e;
    color: #f0f0f0;
    text-align: center;
}

h1 {
    margin-top: 20px;
    font-size: 2em;
    color: #ffffff;
}

canvas {
    margin: 20px auto;
    display: block;
    border: 2px solid #ffffff;
    border-radius: 10px;
    background-color: #2b2b2b;
}

input[type="button"] {
    margin: 10px 5px;
    padding: 10px 20px;
    font-size: 1rem;
    border: none;
    border-radius: 8px;
    background-color: #4CAF50;
    color: white;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

input[type="button"]:hover {
    background-color: #45a049;
}

hr {
    margin: 20px auto;
    width: 60%;
    border: 1px solid #444;
}