JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#" id="loadLink">About</a> 

  <iframe id="content" name="content" align="top" src="index.html" 
      frameborder="0" width="100%" height="1200px" scrolling="no">
  </iframe>

JavaScript

$("#content").hide();
$("#content").attr('src', localStorage['lastPage']);
$("#loadLink").click(function() {
    $("#content").hide();
    var newPage = 'http://mysite.com/newpage.html';
    localStorage['lastPage'] = newPage;
    $("#content").attr('src', newPage);
});

$("#content").load(function() {
    $(this).slideDown();
});