.spinnerDialog {
    width: 15em;
    height: 16em;
    background-color: #FFF;
    color: #444;
}

@media (prefers-color-scheme: dark) {
  .spinnerDialog {
      background-color: #444;
      color: #FFF;
  }
}

.spinnerDialog .spinnerAnimation {
    border: 16px solid #AAA; /* Light grey */
    border-top: 16px solid #3498db; /* Blue */
    border-radius: 50%;
    width: 12em;
    height: 12em;
    animation: spin 2s linear infinite;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 1em;
  }

  @media (prefers-color-scheme: dark) {
    .spinnerDialog .spinnerAnimation {
      border: 16px solid #f3f3f3; /* Light grey */
      border-top: 16px solid #3498db; /* Blue */
    }
  }
  
  @keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }

.spinnerDialog .spinnerMessage {
    text-align: center;
}