Interactive lab
Breakpoint Simulator
Drag the slider below to resize the frame. The layout inside decides on its own when it is too narrow to stay horizontal. No JavaScript is making that decision, CSS container queries are.
Try it
Resize the Frame
Drag the slider to resize the frame. Watch the layout inside decide, on its own, when it's too narrow to stay horizontal.
900px · Desktop
No JavaScript is deciding this. CSS container queries are.