JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
  <div class="first">
    first element
  </div>
  <div class="second">
    second element with more characters
  </div>
</div>

CSS

.container {
  background-color: green;
  width: fit-content;
}

.first {
  background-color: blue;
}

.second {
  background-color: red;
}