In the Site Editor, the separator appears full width: <img width="1269" alt="Screen Shot 2021-05-04 at 2 27 22 PM" src="https://user-images.githubusercontent.com/46652/117059190-2436ee00-ace5-11eb-8b61-49662e33b066.png"> This is different than the appearance in a published site: <img width="1288" alt="Screen Shot 2021-05-04 at 2 28 23 PM" src="https://user-images.githubusercontent.com/46652/117059228-3153dd00-ace5-11eb-8107-fe76be75de2d.png">
In the Site Editor, the separator appears full width:

This is different than the appearance in a published site:
