Hello! Excuse me for the delay.. I've resolved the margin problem. It was just a margin top of 15px that was in my boostrap file for ".media" css. I don't know if it is normal that the page have taken the .media css only for the media tab.
For the link in the member name in the header (really not a great problem, the most important was the margin top that I've resolved), it seems like if it introduces an a href in general I've
username
when I click in media tab:username
Anyway thank you very much for your quick responses! Ositive
