JSFiddle - React, Tailwind, and code Playground

HTML

<div id="parent">
  <div id="child1"></div>
</div>

CSS

#parent {
  background: tan;
  font-size: 0;
}

#parent * {
  display: inline-block;
  width: 50px;
  height: 50px;
}

#child1 {
  background: teal;
  margin-right: 100px;
}

#child2 {
  background: olive;
}

#parent > div:first-child:nth-last-child(2) {
  margin-left:60px;
  margin-right:20px;
}