Portrait view on phones no longer showing full-screen of main blog section

For some reason [Moderated: Redundant link removed] displays correctly on a phone when held in landscape position, but not in the normal portrait position. The site uses an old 2012 child-theme and I’m unsure of how this recent problem originated — it had been showing the main section with blog posts full screen in portrait mode, with sidebar widgets following if scrolled down, which was fine.

Wondering if there is a quick fix to return the portrait view to a full screen of the main centered blog post section…?

Thank you

• This topic was modified 2 years, 5 months ago by t-p.

The page I need help with: [log in to see the link]