Well, the page is in Hebrew but you will probably get the idea :)

Here it is: http://mma.hakol-la.media/

The form on the right side of the logo is way too big for the header size.

How can I manage the style of the form in the header?

BTW, what I am trying to achieve is adding things on the sides on the logo in the header so in case you have a better solution, it will be gr8.
Here is the original website in Wix which we are trying to re-build on WP with the super-pro Enfold theme: http://www.mma-israel.com/ (you can see for yourself the boxes from both sides of the Logo in the header).