JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
  <img src="http://placehold.it/350x150" class="fit">
</div>

CSS

.container{
  border:1px solid black;
  width:100px;
  height:100px;
}

.fit{
  width:100%;
  height:auto;
}