Hi Julia! Here's how to fix the issue with the full-width spacer under your 2-column block:
1. Add a New Full-Width Section: Instead of trying to add a spacer directly to the column block, create a new full-width section right below it. Most editors will allow you to drag and drop a full-width spacer there.
2. Check for Glitches:If the editor glitches, try these steps:
- Save your work and refresh the page.
- Ensure you're using an updated browser (Chrome often works best for editors).
3. Adjust Padding/Margins: If the new section doesn’t align perfectly, use padding or margin settings to make it look seamless.
If it still doesn’t work, describe what editor/tool you're using, and I’ll guide you further! 
Hi @JuliaFG !
@Mich expert is correct - if you drag a new section underneath your column block, and then drag a spacer block into that new section, it will be a full-width spacer rather than just applying to one of the columns!
I hope this helps! :)
Thank you @Mich expert and @emma.owens - that’s SO helpful.
Really appreciate it 