JSFiddle - React, Tailwind, and code Playground

HTML

<h4 class="center">hello</h4>
<p>
  blah blah blah blah blah blah blah blah blah blah
</p>
<a id="link_1" href="3801" data="1" class="expander_link">center me horizontally</a>

CSS

.center {
  text-align: center;
  align-self: center:
  margin: 0 auto;
}
.expander_link {
  padding-top: 50px;
  padding-bottom: 50px;
  margin: 0 auto;
  font-size: 100%;
  font-weight: bold;
  color: hotpink;
  text-align: center;
  align-self: center;
  text-decoration: none;
  width: 200px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}