    <span class="yellow"></span>
  </div>
</section>
<section id="shadowHost"></section>
<section id="thirdSection"></section>

<script>
'use strict';
const greenStyleText = ".green { color: green; }";
const redStyleTexts = [".red { color: red; }", ".red + span + span { color: red; }"];
const blueStyleTexts = [".blue { color: blue; }", ".blue + span + span { color: blue; }"];
const whiteStyleText = "* { color: white; }";
const yellowStyleText = ".yellow { color: yellow; }";

const firstDiv = document.queryS