JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#"><img alt="Test Large" class="large" src="http://prizem.dreamhosters.com/test/test_large.jpg"></a><a href="#"><img alt="Test Small 1" class="small" src="http://prizem.dreamhosters.com/test/test_small_1.jpg"></a><a href="#"><img alt="Test Small 2" class="small" src="http://prizem.dreamhosters.com/test/test_small_2.jpg"></a>

CSS

img {
  float: left;
}

img.large {
  width: 70%;
}

img.small {
  width: 30%;
}