JSFiddle - React, Tailwind, and code Playground

HTML

<div>My text</div>
<br>
<div class="side">My text</div>

CSS

div {
  width: 200px;
  height: 100px;
  text-align: center;
  vertical-align: middle;
  border: solid;
  display: table-cell;
}

.side {
  writing-mode: sideways-lr;
}