How to center align body entry-content

Please help how to fix this?

https://awesomescreenshot.com/0814r22n04

it was center aligned and has bigger slider… now it is left aligned and i dont know how to troubleshoot this.

I updated a plugin and some themes. installed and activated WP google map also.

pls help What to do? Im just a beginner. Thanks in advance.

Shopping theme by themehall.
Omega child theme.
https://www.pingconmarketing.com