小编ill*_*gic的帖子

.banner-bottom h2 {
  font-size: 2em;
  color: #372568;
  position: relative;
  padding-bottom: 1em;
  text-align: center;
}

.banner-bottom h2:before {
  content: '';
  position: absolute;
  top: 25%;
  left: 25%;
  background: #372568;
  height: 2px;
  width: 8%;
}

.banner-bottom h2:after {
  content: '';
  position: absolute;
  top: 25%;
  right: 25%;
  background: #372568;
  height: 2px;
  width: 8%;
}

<div class="banner-bottom">
  <div class="container">
    <h2>Special Promo</h2>
    <h2>Promo</h2>
    <div>
      <div>