Contact details in menu

Hello all!

I would like to have the adress of a company, inclusive email and phonenumber in the menu header. My website is

I added this line to the functions.php:
echo 'Tel. nr: 06 12 34 56 78 – E-mail:';

Then it’s centered in the menu header and it has a different colour than other text. I would like to have it aligned to the right of the menu header and I would like to change the colour to white, like the others.

How can I do this?

Already got this one. Thanks.