body {
    font-family: Arial, sans-serif;
    background-color: #f7f7f7;
    margin: 0;
    padding: 0;
}

.popup-container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #ffffff;
    border: 1px solid #ddd;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    padding: 20px;
    z-index: 999;
}

button {
    background-color: #008cba;
    color: white;
    padding: 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #005f5f;
}