You can hide an element on a page — and bring it back later — without deleting it.
Hide an element
Click the element on the page, then choose Hide. It will no longer appear on your live site for the device view you’re currently editing.
Show a hidden element
Click the Unhide Elements icon in the editor’s left panel (it appears in the Layers panel if your editor has one). This icon only shows when a page has hidden elements.
You’ll see a list of hidden elements — click the one you want to bring back.
Tip: Hiding and showing apply only to the device view you’re editing (desktop, tablet, or mobile). If you don’t see a hidden element, switch to that device view first.
See also the Website Editor Overview.