.mobile-story-contents {
  display: block;
  margin: 40px 0;
}

.mobile-story-contents a {
  display: block;
  margin-bottom: 1em;
}

.desktop-sticky-widget {
  display:none;
}

@media (min-width: 520px) {
  .mobile-story-contents {
    display: none;
  }
  .desktop-sticky-widget {
    display: block;
    position: -webkit-sticky;
    position: sticky;
    top: 0;
  }
  
}