Sticky menu icon/logo and header

Hi guys,

Are you able to help me with the next questions:

1) On the sticky menu, when I scroll down, I want to put the icon of the event (it will be small) at the left of the top menu (only when I scroll down and it turns to a sticky menu). Do you know how to do it?

2) On the webpage “practical info” the header (that is transparent) is now not showing because the background of my pages are white (I want to keep it like that though). Do you know how to define a different header for this specific page, other than the one I have when you run festanca.org (homepage)?

3) My site is bilingual, do you know if I can have 2 different headers for both languages? I can’t figure out that. I am using polylang.

Thank you a lot!

The page I need help with: [log in to see the link]