JSFiddle - React, Tailwind, and code Playground

HTML

<div class="box">
<img src="http://placehold.it/350x150">
</div>
<div class="box">
<img src="http://placehold.it/150x150">
</div>
<div class="box">
<img src="http://placehold.it/100x100">
</div>

CSS

.box {
  position: relative;
  width: 500px;
  height: 300px;
  background: #444;
  margin: 1em;
}

.box img {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2em;
  margin: 0 auto;
  border: 1px solid red;
}