body {
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #222;
}

canvas {
    border: 1px solid #fff;
}

button {
    font-size: 20px;
    padding: 10px;
    border: none;
    border-radius: 5px;
    background-color: #4CAF50; /* Green */
    color: white;
    cursor: pointer;
    position: absolute;
    transform: translate(-50%, -50%); /* Center the button relative to its position */
}

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

.grid-cell {
    width: 60px;
    height: 60px;
}