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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              <h3>A Simple AJAX Example <span>with</span> Plain JavaScript</h3>
<p>Data retrieved from <a href="" target="_blank">Wikipedia</a></p>
  <img src="" alt="Einstein">
  <button id="request">Learn more about Einstein</button>
  <div id="bio"></div>
              /* GENERAL STYLES
–––––––––––––––––––––––––––––––––––––––––––––––––– */

$bg-main-color: #fdfdfd;

* {
  box-sizing: border-box;
  font-family: sans-serif;

html {
    font-size: 1em;

body {
  background: $bg-main-color;
  line-height: 1.625;

h3, p, div {
  text-align: center;

h3 {
  text-transform: capitalize;
  span {
    text-transform: none;

button {
  display: block;
  margin: 15px auto;

#bio {
  max-width: 70%;
  margin: 15px auto;
  padding: 10px;

              (function() {
  'use strict';
  // find the desired selectors
  var btn = document.getElementById('request');
  var bio = document.getElementById('bio');
  // set up a request
  var request = new XMLHttpRequest();
  // keep track of the request
  request.onreadystatechange = function() {
    // check if the response data send back to us 
    if(request.readyState === 4) {
      // add a border = '1px solid #e8e8e8';
      // uncomment the line below to see the request
      // console.log(request);
      // check if the request is successful
      if(request.status === 200) {
        // update the HTML of the element
        bio.innerHTML = request.responseText;        
      } else {
        // otherwise display an error message
        bio.innerHTML = 'An error occurred during your request: ' +  request.status + ' ' + request.statusText;

  // specify the type of request'Get', '');

  // register an event
  btn.addEventListener('click', function() {
    // hide the button = 'none';
    // send the request
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