body {
    font-family: Arial, sans-serif;
    background-color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}
.container {
    text-align: center;
}
input, button {
    margin: 10px;
    padding: 10px;
    font-size: 16px;
}
canvas {
    margin-bottom: 20px;
}