/* General Reset */ * { margin: 0; padding: 0; box-sizing: border-box; } body { font-family: 'Arial', sans-serif; background-color: #f7f9fc; display: flex; justify-content: center; align-items: center; height: 100vh; } .container { background-color: #fff; border-radius: 10px; padding: 20px; box-shadow: 0 0 20px rgba(0, 0, 0, 0.1); max-width: 600px; text-align: center; } h1 { font-size: 24px; color: #333; margin-bottom: 20px; } .video-controls { margin-bottom: 20px; } #screen-preview { width: 100%; height: 300px; border: 2px solid #00bcd4; border-radius: 10px; margin-bottom: 10px; } .btn { background-color: #00bcd4; color: white; border: none; padding: 10px 20px; border-radius: 5px; cursor: pointer; transition: background-color 0.3s ease; } .btn:hover { background-color: #008ba3; } .btn:disabled { background-color: #cccccc; cursor: not-allowed; } #status { color: #666; font-size: 16px; } #error-message { color: red; margin-top: 10px; font-size: 14px; }