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I would like to put this grid as sticky

I don’t know what I did wrong. I already set it to sticky but it doesn’t work.
image


Here is my site Read-Only: https://preview.webflow.com/preview/adore?utm_medium=preview_link&utm_source=designer&utm_content=adore&preview=cf793fa1464c265d311af488078b054c&pageId=5f3c9e964349ddcae18b44e1&mode=preview
(how to share your site Read-Only link)