UX: Showcased categories sidebar adjustments (#5)

desktop/desktop.scss

@@ -0,0 +1 @@
+@import "showcased-categories";

scss/showcased-categories.scss

@@ -0,0 +1,19 @@
+.showcased-categories-sidebar {
+  .full-width .contents .topic-list {
+    display: unset;
+  }
+
+  .two-topic-list-sidebar {
+    .topic-excerpt {
+      display: none;
+    }
+
+    .btn-link.posts-map.badge-posts {
+      display: block;
+    }
+
+    .topic-list .topic-list-item {
+      height: unset;
+    }
+  }
+}