html, body {
  scroll-behavior: smooth;
}

@media (max-width: 768px) {
  .post-sidebar__index__items {
    display: none;
  }
}

.post-sidebar__index__items--select {
  display: none;
}
@media (max-width: 768px) {
  .post-sidebar__index__items--select {
    display: block;
  }
}