JSFiddle - React, Tailwind, and code Playground

by locally

HTML

<div class="entry-header">
    	<h1 class="entry-title">Flaming Norm</h1>

</div>

CSS

.entry-title {
    display:inline-block;
    position: relative;
}
.entry-title:after {
    content: '';
    width: 100%;
    border-top: 1px solid black;
    position: absolute;
    top: 50%;
    left: 100%;
    margin-left: 30px;
}