Hide navbar in one section?

I want a scrolling Lottie animation to appear when entering the site. When the scroll is finished, I want the homepage to appear with the navbar. If I assign the Lottie to a section, can I hide the navbar from that section?

I’m not sure if I understood what you are trying to achieve.

But for loading effect, we usually place that element on top using position: fixed, that way everything below hides. And when animation finishes, we hide the loading animation element.

How do I hide it when the scrolling animation is finished?

Oh for that you have to add interaction, Page Load interaction from Page trigger.
And add animation to how you want to happen when page starts loading and when page finishes loading.