cart page - poor vision "Big One theme"

Site: => www.des-style.com I have a problem cart page – poor vision. Is there a way to fix? Tell me something.
It looks like there is some plugin which modifies the theme styling, but who?
Please help me…:frowning:
PS: the topic is not on here, please excuse me. Please moderators to move where needed. Thanks !

Contact the theme author for support