I mean..the layout is actually fine since you can read all the text without scrolling right. I can tell that by your imgur screenshot.
The issue is the picture is Max 600pixels and extends beyond the layout, which then you scroll right to see it.
I'm on mobile 90% of the time and it's not a big deal to me. There's a tiny button to the far right (like 5px x 5px), and that will extend the page to be wider but drop out the navigation to the left.