Mobile view get changed (wide) after css customize

Dear all,
I have changed some looks through css. I am using 3.0.1, have not upgraded yet. It was fine before when viewing form mobile. Now, the main page gets wide in mobile.
Does the css affects it?

http://jurnalbeta.ac.id
@anupent
@asmecher

Can you share what exactly you changed?

Hi @anupent
I will message you the css.