JSFiddle - React, Tailwind, and code Playground

HTML

<div><span>Things to Know</span>
</div>

CSS

div {
    text-align:center;
}
div:after {
    position:relative;
    display:block;
    border-top:1px solid grey;
    top:-10px;
    height:1px;
    content:'';
}
div span {
    background:white;
    position:relative;
    z-index:1;
}