JSFiddle - React, Tailwind, and code Playground

HTML

<div class="columnify">
  <div style="display: inline-block; height: 20px; background-color: blue;"></div>
  <div style="display: inline-block; height: 20px; background-color: blue"></div>
  <div style="display: inline-block; height: 20px; background-color: blue"></div>
</div>

CSS

.columnify {
  display: flex;
}

.columnify > * {
  flex: 1;
}

.columnify > *:not(:first-child) {
  margin-left: 2rem;
}