How to make the CMS dummy proof

When setting up a site for a client that they will be able to go in and edit themselves, is there a “standard” way to make it dummy proof. By that I mean make sure they are working in the correct div (and or not adding random divs)

I do my best to show them how the tag drop down menu works (“if you want a heading to look like this choose heading 1 from this drop down” If you want a paragraph choose paragraph from the drop down”)

Is there a way I can make this easier in the back end?