JSFiddle - React, Tailwind, and code Playground

HTML

<div class="block">
  <div class="centered">
    ... content and images
  </div>
</div>

CSS

html, body {
    height: 100%;
    margin: 0;
}
.block {
    height: 100%;
    text-align: center;
}
.block:after, .centered {
    display: inline-block;
    vertical-align: middle;
}
.block:after {
    content: '';
    height: 100%; 
}