How can I hide the "all categories" selection bar on the front page?

Development
3

When you say front page, do you mean only /latest specifically? or would you also want this to apply to /top /new etc when there’s no category or tag selected?

If you’d like this to apply this on all of these pages, this CSS will work when added to the common file in admin/customize/themes

.navigation-topics { 
  .category-breadcrumb  {
      display: none;
    }
}

If you’d only like this to apply to / and /latest then this would be more complicated.