Tips
If you have edited or made changes to any content on your site, like:
article
department
category
category banner image
portal page
portal image
department image
background colour
changed a published date (so articles appear before other articles)
and you do not see any of the changes.
Try the following.
Press CTRL + F5 while on your site.
This will clear your browsers cached memory (clear the cache) and reload the latest changes.