JSFiddle - React, Tailwind, and code Playground

HTML

<div class="parent"><!---->
  <h6>A B C D E</h6>
  <div class="right">
    buttons
  </div>
</div>

CSS

/* default styles */
.parent {
  display: flex;
  align-items: center;
  padding: 0.5rem 1rem;  
}

.parent h6 {
  flex-grow: 1;
}