Nuriaruiz on "Responsive doesn't work!"

Hi,

I'm using Expositio Theme, and it was working properly in responsive, but now, is not working anymore. I can not contact to the developers. :(

Did I do something wrong? How should I fix it?

nuriaruizportfolio.com

Thanks
N

Please!!

Is there anybody who knows how to solve the issue??
The responsive option is not working!!

Thanks in advance
N