body {
    font-family: Arial, sans-serif;
    margin: 20px;
}
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 8px;
}
form label {
    display: block;
    margin-bottom: 5px;
}
form input, form button {
    width: 100%;
    padding: 8px;
    margin-bottom: 10px;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
table, th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}