body {
    background-color: #111;
    color: white;
    text-align: center;
    font-family: Arial;
}

canvas {
    border: 1px solid #555;
    margin-top: 20px;
    background-color: black;
}

label {
    margin-right: 10px;
}

input, select {
    margin: 10px;
}