fix: Bring UI closer to mockups

This makes many tweaks to get the UI closer to
the mockup and using Paragon components as much as possible.

Related tickets:
* [TNL-8427](https://openedx.atlassian.net/browse/TNL-8427)
* [BB-4417](https://tasks.opencraft.com/browse/BB-4417)

package.json

@@ -39,7 +39,7 @@
     "@edx/frontend-component-footer": "10.1.4",
     "@edx/frontend-component-header": "2.2.5",
     "@edx/frontend-platform": "1.10.3",
-    "@edx/paragon": "14.12.5",
+    "@edx/paragon": "16.7.0",
     "@fortawesome/fontawesome-svg-core": "1.2.35",
     "@fortawesome/free-brands-svg-icons": "5.15.3",
     "@fortawesome/free-regular-svg-icons": "5.15.3",