.hero-bkg-animated {
  background: gray url(https://subtlepatterns.com/patterns/geometry2.png) repeat 0 0;
  width: 100%;
  margin: 0;
  text-align: center;
  height: 300px;
  padding-top: 120px;
  box-sizing: border-box;
  -webkit-animation: slide 20s linear infinite;
}

.hero-bkg-animated h1 {
  font-family: sans-serif;
}

@-webkit-keyframes slide {
    from { background-position: 0 0; }
    to { background-position: 400px 0; }
}