body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #f4f4f4;
}

button {
    padding: 10px;
    margin: 5px;
    font-size: 16px;
    background-color: #007BFF;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

.modal {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0px 0px 10px gray;
}

video {
    width: 300px;
    height: 200px;
    border: 1px solid #ddd;
}