body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    color: #333;
    margin: 0;
    padding: 0;
    text-align: center;
}

h1 {
    background-color: #007bff;
    color: #fff;
    padding: 1rem;
    margin: 0;
}

#form-container {
    margin: 2rem auto;
    padding: 1rem;
    max-width: 600px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

form label {
    font-weight: bold;
}

form input, button {
    margin: 0.5rem;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    background-color: #007bff;
    color: #fff;
    border: none;
    cursor: pointer;
}

button:disabled {
    background-color: #6c757d;
    cursor: not-allowed;
}

table {
    width: 80%;
    margin: 2rem auto;
    border-collapse: collapse;
}

table, th, td {
    border: 1px solid #ddd;
}

th, td {
    padding: 0.75rem;
    text-align: left;
}

thead {
    background-color: #007bff;
    color: #fff;
}