.mitte {text-align:center;}
.myButton{ position: fixed;
      top: 20px;        /* Abstand vom unteren Rand */
      left: 20px;         /* Abstand vom rechten Rand */
      padding: 20px 30px;  /* Größe des Buttons */
      font-size: 1.2rem;
      background-color: #3498db;
      color: white;
      border: none;
      border-radius: 12px;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
      z-index: 1000;
      transition: background-color 0.3s ease;}