JSFiddle - React, Tailwind, and code Playground

HTML

<div id="attachment_529" class="wp-caption aligncenter" style="width: auto;"><img class="img_aligncenter wp-image-529" src="...

CSS

.aligncenter {
    display: block;
    margin-right: auto;
    margin-left: auto;
}
.img_aligncenter {
    clear: both;
    display: block;
    margin: auto;
}
img {
    display: block;
    margin: auto;
    height: auto;
    max-width: 95%;
    padding: 5px;
}
.aligncenter .wp-caption-text {
  max-width: 200px;
  margin: auto;
  height: auto;
}