JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  <img src="http://images.clipartpanda.com/envelope-with-letter-clipart-envelope-md.png" />
</div>

CSS

div {
  width: 100px;
  height: 50px;
  background-color: #aaf;
  padding: 5px;
  box-sizing: border-box;
}
img {
  height: 40px;
  width: 90px;
}