JSFiddle - React, Tailwind, and code Playground

HTML

<title>mark</title>
  <body>
  <article>
    This is regular text with <mark>marked text</mark> inside.
  </article>
 </body>

CSS

mark {
    color: #fff;
    background: #cccccc;
    padding: 0 3px;
    border: 1px dashed #ccc;
   }