.cvb-button {
    background: #ff9800;
    color: white;
    padding: 10px 25px;
    border-radius: 30px;
    border: none;
    font-weight: bold;
    cursor: pointer;
}

.cvb-result {
    margin-top: 20px;
    padding: 15px;
    border: 5px solid #333;
    border-radius: 5px;
    background: #fffbe6;
}

.cvb-result.expired {
    color: red;
    font-weight: bold;
}