JSFiddle - React, Tailwind, and code Playground

HTML

<div class="grid">
  <div class="item"></div>
</div>

CSS

.grid {
  display: inline-grid;
  grid-template-columns: max-content minmax(0, 100px);
  background: magenta;
}
.item {
  grid-column: 1 / 3;
  width: 100px;
  height: 100px;
  background: cyan;
}