Mobile phone css problem

hello, I have problem fixing some css problems with my site on mobile phones

live:
mobiletest.me/htc_one_emulator/?u=http://www.ultras-tifo.net/

I want to remove empty grey space on the right imgur.com/VgFlvEF

thanks!

Dear Davor.
Thanks for the feedback to me again.
I checked your site and I don't see the problem that you send via an image.
Please view my image again: prnt.sc/ehrdxu

Huyen Tran wrote: Dear Davor.
Thanks for the feedback to me again.
I checked your site and I don't see the problem that you send via an image.
Please view my image again: prnt.sc/ehrdxu

you have horizontal scroller down. just move it a bit right and ull see blank space on right. I want to get rid of that blank space and horiznotal scroller.

(if you need acces to admin panel, I think I sent login you before in inbox)