dkuney1

That worked, thank you so much!

Thanks, I see the issue now. You are referring to the blog post list, not the individual blog post articles that I referred to in my first reply.
You should be able to achieve a full width blog list on mobile by adding this to Design > Custom CSS:
@media screen and (max-width: 767px) {   .blog-single-column .blog-single-column--text {     width: 100%;   } } Let me know how you get on.