Make the site look like this

Hello,

first I want to say that the Theme Envold is awesome. It is really fun to work with.

Now I have started to customize my website and my target is the my website is looking similar like this site: http://www.avira.com/en/index

1. There is more space between the nav entries and when you are on the site “e.x. support” the main nav entrie is marked
2. The picture seams to slide up when you scroll down
3. The Searchbar slides in from above
4. Is it possible to make a box with the like http://www.avira.com/en/support

Thank you so much for your support