JSFiddle - React, Tailwind, and code Playground

HTML

<div class="contents-vertically-centerd">
  <img id="testimage" src="https://blog.stackoverflow.com/images/wordpress/stackoverflow-logo-300.png" width="150"/><span>Here's some text that I want vertically centered with respect to the image</span>
</div>

CSS

div.contents-vertically-centerd { padding: 10px; border: 1px dashed #000000; }
#testimage {
  vertical-align: center;
}