Is there are easy way to make using Divi sites responsive without editing code or additional CSS

Hi, I am facing problems with my customers website that is using Divi and it would be easy to make certain sites using Bootstrap classes but because the site is bolted using Diving is there any ways built in Divi to make responsive so that mobile sites would look fine.

Frontpage and other sites look ok, but some of sites doesn't look good and I am wondering what would be the easiest way to make them mobile friendly?

 

Any ideas on this or do just have do the changes in additional CSS:

 

Hi and thanks for your help! I have a further question regarding the different versions as I don't like to make two separate sites for desktop and mobile but would only one. Divi seems to making the changes also to the desktop version even though I have chosen the mobile version to make the changes like in this pic:




This would be easy to do with bootstrap css classes but the site doesn't have it in use.

 

Hi, here is mobile view when I move the text element above the other text elements to give a better viewing for mobile and not stretching the page:


When I change back to desktop view and move the text element back to the left side of the page the same change that happens also on mobile view:



Here is the Divi structure that is involved in these elements. Do you need to see more of the page structure or something else?



Thank you for help!