.btn {
    background-color: #28a745;
    color: white;
    border: none;
    padding: 10px 16px;
    margin-top: 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 15px;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #218838;
}