[FIX][website_cookie_notice] Fix mobile layout
[FIX][website_cookie_notice] Fix mobile layout

Before this patch, the *OK* button was overflowing the horizontal width a little bit in English, but much more in languages where *OK* is a longer word.

Now the button goes below the message in phones, avoiding that problem.

Vauxoo/website,Vauxoo/website,Vauxoo/website