JSFiddle - React, Tailwind, and code Playground

HTML

<h2><span>Test</span></h2>

CSS

h2{
    font-size: 100px;
    border-top: solid 1px black;
    width: 100%;
    height: 50px;
    margin-top: 25px;
    top: 50%;
    z-index: 1;    
}

span{
     background: #fff;
      padding: 0 20px;
      margin-top:-25px;
       display: inline-block;
       z-index: 5;
}