Wrong slider width

The slider must be one screen width, but it expands on two.

The site is (http://www.vdoroge.zp.ua/)
Thanks a lot to everybody for help

Hey there

I see your problem, as a first step of troubleshooting, lets test for a plugin conflict, you can do this by deactivating all third-party plugins, and seeing if the problem remains. If it’s fixed, you’ll know a plugin caused the problem, and you can narrow down which one by reactivating them one at a time.

Let me know the results.