Menu dropdown sliding rom top of the screen

My menu drop down behaves well while I’m in editing in webflow. If I test it in preview mode or in production, it slides down from the top of the screen and I can’t find how to solve that.

can you give us your project’s public link?

I’d had do that but it’s a productin website with sensible information from my clint, have to duplicate before :slight_smile: Or can I send it to you privately and consider I can be in confidence ? (I already consider it)