JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    <h1>Слово</h1>
</div>

CSS

div {
    margin-top: 1em;
    border-top: 2px solid;
}
h1 {
    display: inline-block;
    background: #fff;
    padding: 0 .2em;
    position: relative;
    left: 2em;
    top: -.5em;
    font: normal 2em/1 serif;
}