body {
    background-color: #0b1d3a;
    color: white;
    font-family: Arial, sans-serif;
    text-align: center;
}

canvas {
    background-color: #1c2f4a;
    border: 2px solid white;
    display: block;
    margin: 20px auto;
}

.buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 5px;
    margin-bottom: 10px;
}

button {
    padding: 10px 15px;
    font-size: 14px;
    cursor: pointer;
    margin: 3px;
}

footer {
    margin-top: 10px;
    font-size: 14px;
    color: #ccc;
}