@media screen and (min-width: 1261px) {
  .single-post-sidebar {
    min-height: 50px;
    position: sticky;
    flex-direction: column;
    top: 120px;
    height: -moz-min-content;
    height: min-content;
    width: 340px;
    flex: 1 0 340px;
  }
}