horizontalLine

HTML

<h1>heading</h1>

CSS

h1::before,
h1::after {
    display: inline-block;
    content: "";
    border-top: .3rem solid black;
    height: 6rem;
    width: 2em;
    /* transform: translateY(90%); */
    margin-left: .9em;
    margin-right: .9em;
}