body {
    font-family: Arial, sans-serif;
    background: #111;
    color: white;
    text-align: center;
}

.container {
    margin-top: 20px;
}

video {
    width: 640px;
    height: 480px;
    border: 3px solid #00ff99;
    border-radius: 12px;
}

.instruction {
    font-size: 28px;
    margin-bottom: 15px;
    color: #00ff99;
}

.status {
    margin-top: 20px;
    font-size: 20px;
}