There are different changes that can be made on the sitebuilder.
- Switching to a different theme and going back to the old one. You can go back to a previous theme easily - just click on the Themes tab, then on Change Theme, and then on the Recently Used tab. You should see your previous theme there, allowing you to switch right back.
- Typing in a text element: If your cursor is still inside the text element, then you can use the undo and redo arrows to undo and redo. Keep in mind that your text will be automatically saved once you click outside of the element, so you won't be able to use the undo/redo buttons after that. Also, if you deleted a file or image from inside an element, we don't have a way to restore that either.