body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f4f4f4;
}

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

canvas {
    border: 1px solid #000;
    background-color: #fff;
}

button {
    margin-top: 10px;
    padding: 10px 20px;
    background-color: #007bff;
    color: #fff;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}