Is there a idiomatic way to build a mega menu that opens inline?

  • [email protected]
    July 25, 2026 at 5:28 am

    I’m trying to build a Mega Menu that opens in flow rather than as an overlay. The pattern I’m after is common on some Finnish municipal sites: clicking a top-level item expands a full-width panel directly beneath the navigation bar, and everything below it like breadcrumbs is pushed down rather than covered. Example: https://www.pori.fi/tyo-ja-yrittaminen/

    As far as I can tell, Overlay Panels are always positioned layers and therefore can’t reflow the document, so the Mega Menu panel type isn’t the right tool here. Is that correct?

    Has anyone implemented this with GenerateBlocks (Pro)? Any existing example or pattern would be very welcome. Couldn’t find one.

  • George
    July 26, 2026 at 10:41 am

    Hi,

    You’re right — Mega Menu Overlay Panels won’t do this. Overlay Panels are always positioned out of document flow, so they layer over content rather than pushing it down. There’s no setting that makes the panel reflow the elements below it, so the in-flow expanding panel you’re describing isn’t possible with the current Overlay solution, and there’s no existing GB Pro pattern for it.

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