[ch8230]

Why was 'mobile last' a takeaway from a hackathon? Most dev's probably focused their efforts on the breakpoint they would demo. It is possible that are indeed doing 'mobile last' but I wouldn't conclude that from a survey of hackathon projects.

[jonathanstark]

Good point about "the screensize they would demo" but in the case of Rails Rumble, the contestants don't demo their work. The judges browse through them on their own on whatever device they like.

[ch8230]

thanks for clarifying that does open up the need for responsiveness.