Closes #6215 (#6222)

- Markup cleanups, CSS placement improvements for tags.
- Better approach to tag layout.
- CSS prop migrated to _constants.scss.
- Style and layout improvements for `.c-autocomplete*` input.

Co-authored-by: Scott Bell <scott@traclabs.com>

src/plugins/notebook/components/NotebookEntry.vue

@@ -99,7 +99,7 @@
                 </div>
             </template>
 
-            <div>
+            <div class="c-ne__tags c-tag-holder">
                 <div
                     v-for="(tag, index) in entryTags"
                     :key="index"