Hi @Sven_Erik_Slattedale @Brando
I found the issue with your navbar! Basically on the current class you have some 15 padding for ‘Navlink Logo’ but on the non-current class you don’t. So just add the 15 padding to the other ‘Navlink Logo’ and that should fix your navbar 
Share button - is it just the one instance in ‘Product Template’ ? I can’t see other instances…
Hope that solves some of it !
Stu