JSFiddle - React, Tailwind, and code Playground

HTML

<div style="display: flex; gap: 30px" class="decoration">
  <div class="element">hoge</div>
  <div class="element">hoga</div>
  <div class="element">hoho</div>
</div>

CSS

.decoration {
  border: 1px solid;
}

.element {
  background-color: grey;
}