JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#" class="btn">Sting</a>
<a href="#" class="btn">Black</a>

CSS

.btn {
  display: inline-block;
  margin: 4px;
  padding: 8px 16px;
  background: #212121;
  border-radius: 6px;
  color: white;
  text-transform: uppercase;
  text-decoration: none;
  font-family: arial;
  font-size: 10px;
  font-weight: 700;
}