JSFiddle - React, Tailwind, and code Playground

HTML

<img src="https://placekitten.com/g/300/200" />

CSS

html {margin:0;padding:0}

body {
  margin: 0;
  padding: 0;
  color: #363636;
  font-size: 90%;
  line-height: 1.6;
  background: #efefef;
}

img {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  max-width: 100%;
  max-height: 100%;
}