footer {
  position: fixed;
  bottom: 0;
  width: 100vw;
}
@media (max-width:767px) {
  .hero-text {
    font-size: 1.5em;
  }

  .social-media img {
    width: 70px;
    height: auto;
    margin-right: 25px;
  }

  footer {
    position: relative;
  }
}