The Max width of the body from a website

Bootstrap Studio Help
1

I need help!

I don't know how to setup a width for my website in the graphical editor... I want the PC view to have a higher width and the website to be completely covered.

Approximately like this website: http://www.parelli.com/

PS: Sorry for my bad english! :D

Thanks for all your answers!

2

Can't change preview width within the app but if you set your containers to be fluid in rh menu when selected it your browser preview will be full width