JSFiddle - React, Tailwind, and code Playground

HTML

<figure>
  <figurecaption>
    <p class="vertical">The following diagrams show the solution.</p>
  </figurecaption>
</figure>

CSS

figure {
    display: inline-block;
    margin: 0;
    background-color: gray;
}

p.vertical {
    -webkit-writing-mode: vertical-rl;
}