JSFiddle - React, Tailwind, and code Playground

HTML

<h1>How it Works</h1>

CSS

h1:before, h1:after {
    content: "";
    height: 1px;
background: linear-gradient(to right,  rgba(0,0,0,0) 0%,rgba(147,147,147,1) 50%,rgba(0,0,0,0) 100%);
    display: block;
    margin-bottom: 10px;
    margin-top: 10px;
}