.article h2 {
    position: relative;
    display: table;
    padding: 0 55px;
    margin-left: auto;
    margin-right: auto;
}

.article h2:before,
.article h2:after {
  content: '';
  position: absolute;
  top: 50%;
  display: inline-block;
  width: 45px;
  height: 2px;
  border-top: solid 1px black;
  border-bottom: solid 1px black;
}

.article h2:before {
  left:0;
}
.article h2:after {
  right: 0;
}