message: Make blacklist instead of whitelist.
diff: var isBlink = (isChrome || isOpera) && !!window.CSS;
  function replaceViewer(e) {
  - if (isChrome || isFirefox || isEdge || isSafari) {
  - document.getElementById("demo-container").innerHTML = "<iframe src='./learning/public-viewer-demonstrator/' class='iframe-viewer'></iframe>";
  - } else {
  + if (isIE || isEdge) {
  document.getElementById("viewiModelBtn").innerHTML = "Sorry, the browser you are using is not supported. Please open the iModel.js viewer with one of the following browsers:<br>Firefox, Chrome, Edge, Safari";
  + } else {
  + document.getElementById("demo-container").innerHTML = "<iframe src='./learning/public-viewer-demonstrator/' class='iframe-viewer'></iframe>";
  }
  e.preventDefault();
  }
  