Slider troubleshoot

Hello everyone.

I have a problem with onetone theme’s banner section. There is a slider, which is working fine until I resize the browser. In this case, slides are appearing on the left instead of center. I would like the slides to remain the same width when resizing, like header.

I am not a professional, so I can’t find a solution to problem.

I hope you will be able to help me. Here is the link to the site if problem doesn’t seem clear as I stated or you need to take a look at the code: http://competition.inscript.lt/

Thank you.