body {
    font-family: Arial, sans-serif;
    padding: 20px;
    background: #f9f9f9;
}
h1 {
    color: #333;
}
form input[type="text"] {
    width: 300px;
    padding: 8px;
}
form button {
    padding: 8px 12px;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
table th, table td {
    border: 1px solid #ccc;
    padding: 10px;
}
canvas {
    display: block;
    margin: auto;
}