Hacker News Reader

We could call it <frame>, or maybe <iframe> since all the cool kids use isomethings these days.

Frames don't reflow. For headers etc people would want to integrate with the rest of the DOM.

"seamless" iframes were meant to, right? Don't know what happened to that.

Most headers today are expandable and need to be”open up” to take the full more of the screen when interacted with.

This is not possible with a frame.