How to remove the response code from my theme?

Hi there!
I’m using a child theme in order to rewrite some of the styles that I don’t like and also to personalize each blog post with custom CSS, like these example:

Is there any way I can write styles into my child theme css that will override and cancel the responsiveness? so the blog will always look like the full monitor version?

The theme I’ve working on is the Personal theme by Obox!

Thank you so much, I really appreciate your advice!