🐛 Aligned featured collection and works

This commit removes a negative margin on the featured collections column
and removes a margin from the file img on the featured collections card
to ensure the featured works and featured collections are aligned on the
logged in home page and the logged out home page.

Ref:
- notch8/palni_palci_knapsack#142

app/assets/stylesheets/hyku.scss

@@ -543,11 +543,6 @@ body.public-facing {
   width: 100%;
 }
 
-// align featured collections with featured works
-#featured_collections {
-  margin-top: -5px;
-}
-
 .mb-30 {
   margin-bottom: 30px;
 }
@@ -740,10 +735,6 @@ tr[data-feature="use-iiif-print"] {
 
 // Featured collection
 #featured_collections {
-  display: flex;
-  flex-wrap: wrap;
-  justify-content: left;
-
   h3 {
     font-size: inherit;
   }

app/views/hyrax/homepage/_explore_collections.html.erb

@@ -2,12 +2,12 @@
 
 <% featured_collection = f.object.presenter %>
 <tr>
-  <td>
+  <td class="p-2">
     <div class="d-flex">
       <div>
         <%= link_to [hyrax, featured_collection] do %>
           <%= render_thumbnail_tag(featured_collection,
-                                   { class: 'img-fluid d-none d-sm-block file_listing_thumbnail', alt: "#{featured_collection.title_or_label} #{ t('hyrax.homepage.admin_sets.thumbnail')}" },
+                                   { class: 'img-fluid d-none d-sm-block file_listing_thumbnail mt-0', alt: "#{featured_collection.title_or_label} #{ t('hyrax.homepage.admin_sets.thumbnail')}" },
                                    {suppress_link: true}
           ) %>
         <% end %>

app/views/hyrax/homepage/_home_content.html.erb

@@ -5,7 +5,7 @@
   also, to render featured collections
 %>
 
-<div class="<%= @presenter.display_featured_works? || @presenter.display_recently_uploaded? ? 'col-md-6' : '' %>">
+<div class="<%= @presenter.display_featured_works? || @presenter.display_recently_uploaded? ? 'col-md-6 mb-4' : '' %>">
   <ul id="homeTabs" class="nav nav-tabs" role="list">
     <%# add check for featured works %>
     <% if @presenter.display_featured_works? %>