JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#" class="button">This is a really long link with an ::after</a>

CSS

.button {
  position: relative;
  color: #F00;
  font-size: 1.5rem;
  padding-right: 2.25rem;
}

.button::after {
  content: '>>';
  display: inline-block;
  padding-left: .75rem;
  position: absolute;
}