app/templates/components/explore/category-sidebar/related-categories.hbs
<div class="card is-sticky related-categories">
<h5 class="text-uppercase">{{t "explore.widget.related"}}</h5>
{{#if getRelatedCategoriesTask.isRunning}}
{{#skeleton-container class="category-skeleton"}}
{{#each (repeat 6) as |_|}}
{{skeleton-loader class="category-skeleton-horizontal"}}
{{/each}}
{{skeleton-loader class="category-skeleton-vertical"}}
{{/skeleton-container}}
{{else}}
{{explore/category-sidebar/category-list categories=categories}}
{{/if}}
</div>