aside.sidebar {
  grid-column: -1 / 1;
}

.wp-sidebar + .wp-sidebar {
  margin-top: clamp(10vh, 5vh + 5rem, 10rem);
}
.wp-sidebar h3 {
  margin: 0;
  padding-bottom: 1rem;
  border-bottom: 0.625rem solid var(--clr);
}
.wp-sidebar p,
.wp-sidebar a {
  line-height: 1.45;
  font-size: 1.375rem;
}

.main-content + .sidebar{
  margin-top: 2.5rem;
}

@media (min-width: 64rem) {
  aside.sidebar {
    grid-column: 10 / -1;
  }
}