.owl-carousel,
.classic-blog li.post,
.widget,
.sidebar {
  contain: layout style;
}

.related-box {
  content-visibility: auto;
  contain-intrinsic-size: 823px;
}

.widget_anthemes_recentposts {
  content-visibility: auto;
  contain-intrinsic-size: 595px;
}

body > footer {
  content-visibility: auto;
  contain-intrinsic-size: 122px;
}

@media(min-width: 768px) {
  .related-box {
    contain-intrinsic-size: 403px;
  }
  body > footer {
    contain-intrinsic-size: 312px;
  }
}