JSFiddle - React, Tailwind, and code Playground

HTML

<h1 class="sleepover">Sleeping News</h1>
<h2>A website dedicated to sleepovers</h2>
<section>
  <header>
    <h1 class="work">Latest News</h1>
  </header>
  <article class="bed pillow">
    <p>How to take care of that snorer</p>
  </article>
  <article class="pillow-wet">
    <p>When you wet the bed again</p>
  </article>
  <article class="pillow needed">
    <p>Sleepwalker takes bad fall!</p>
  </article>
<section>

CSS

article[class|="pillow"] {
    background-color: red;    
}