That means:
- Single-column layouts. Sidebars suck.
- No fixed-position elements. Especially not headers or footers, though fixed sidebars are also almost always a mistake. (There can be some benefit for reference / tools, but only about one time in a thousand that they're actually used.) On desktop, I disable all of these with either CSS (Stylish) or uMatrix element blocker. I've given up on any nuance here. If it's a choice of fixed header/footer or none at all, it's none at all.
- A static set of nav or informational links above or below the main article text is acceptable. It's present, but doesn't interfere with the reading flow.
- Put in a motherfucking scrollbar already.