You could possibly achieve this using two box shadows:
div {
margin: 10px;
padding: 10px;
width: 100px;
height: 10px;
box-shadow: -5px 0px 0px 0px black, 5px 0px 0px 0px black;
}<div></div>You could possibly achieve this using two box shadows:
div {
margin: 10px;
padding: 10px;
width: 100px;
height: 10px;
box-shadow: -5px 0px 0px 0px black, 5px 0px 0px 0px black;
}<div></div>