JSFiddle - React, Tailwind, and code Playground

HTML

<div>
<span>hi</span>
</div>

CSS

div {
  padding: 10px;
  text-align: center;
}
div span {
  display: inline-block;
  position: relative;  
}
div span:before, div span:after {
  content: "";
  position: absolute;
  top: 0;
  height: 8px;
  border-bottom: 1px solid;
  width: 100px;
}
div span:before {
  right: 100%;
  margin-right: 10px;
}
div span:after {
  left: 100%;
  margin-left: 10px;
}