RTE fun!

<!-- Include stylesheet -->
<link href="https://cdn.quilljs.com/1.3.4/quill.snow.css" rel="stylesheet">

<!-- Create the editor container -->
<div id="editor">
  <p>Hello World!</p>
  <p>Some initial <strong>bold</strong> text</p>
  <p><br></p>
</div>

<button onclick="submitInfo()">Submit</button>
<div id="result"></div>

<!-- Include the Quill library -->
<script src="https://cdn.quilljs.com/1.3.4/quill.js"></script>

<!-- Initialize Quill editor -->
<script>
  var quill = new Quill('#editor', {
    theme: 'snow'
  });
  function submitInfo() {
    let content = document.getElementById('editor');
    let value = content.getElementsByClassName('ql-editor')[0].innerHTML;
    document.getElementById('result').innerHTML = value;
  }
</script>

Super simple and easy RTE from Quill. Docs here:
https://quilljs.com/