body {
    font-family: Arial, sans-serif;
    background: #f9f9f9;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 20px auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

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

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

input, button {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

button {
    background: #007bff;
    color: #fff;
    cursor: pointer;
}

button:hover {
    background: #0056b3;
}

.messages p {
    padding: 10px;
    border: 1px solid;
    margin: 10px 0;
}

p.success {
    color: green;
    border-color: green;
}

p.error {
    color: red;
    border-color: red;
}

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

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: center;
}

th {
    background: #f4f4f4;
}