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

.create-course-container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background: white;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 10px;
}

header p {
    color: #555;
    margin: 0;
}

.create-course-form {
    display: flex;
    flex-direction: column;
}

.create-course-form button.btn-submit {
    margin-top: 20px;
    padding: 10px;
    background-color: #007BFF;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
}

.create-course-form button.btn-submit:hover {
    background-color: #0056b3;
}

.messages-section ul {
    list-style: none;
    padding: 0;
}

.messages-section .message {
    padding: 10px;
    margin-bottom: 5px;
    border-radius: 5px;
    color: white;
}

.messages-section .message.success {
    background-color: #28a745;
}

.messages-section .message.error {
    background-color: #dc3545;
}