video, canvas {
      display: block;
      margin: 1rem auto;
      max-width: 90%;
    }
    button {
      display: block;
      margin: 1rem auto;
      padding: 1rem 2rem;
      font-size: 1.5rem;
    }    
	.btn {
		background-color:#eee;
      margin: 1rem auto;
      padding: 1rem 2rem;
      font-size: 1.5rem;
    }
    #message {
      text-align: center;
      font-weight: bold;
    }
	
	
        .spinner-container {
            display: flex;
            justify-content: center;
            align-items: center;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5); /* Halbtransparenter Hintergrund */
            z-index: 10000; /* Stellt sicher, dass der Overlay über dem Inhalt liegt */
        }

        .spinner {
            width: 100px;
            height: 100px;
            border: 10px solid #f3f3f3; /* Lichtgrau */
            border-top: 10px solid #3498db; /* Blau */
            border-radius: 50%;
            animation: spin 2s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }