body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 50px auto;
    padding: 20px;
    background-color: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    text-align: center;
    color: #333;
}

.button-group {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

.button {
    padding: 10px 20px;
    background-color: #007BFF;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.button:hover {
    background-color: #0056b3;
}

form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}

input, button {
    padding: 10px;
    font-size: 16px;
}

button {
    background-color: #28a745;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 5px;
}

button:hover {
    background-color: #218838;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 10px;
    border: 1px solid #ddd;
    text-align: left;
}

th {
    background-color: #007BFF;
    color: white;
}

a {
    display: inline-block;
    margin-top: 20px;
    color: #007BFF;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.success {
    color: green;
    font-weight: bold;
}

.error {
    color: red;
    font-weight: bold;
}