CodePen draggable panels

I worked on CodePen's editor panels in 2015. You can drag, resize, and collapse them to better view individual panels.

I got the gig after I tweeted Chris a prototype. He was like "Yeah dude."

[jeromesimms]

Hey, i know this was years a go but it would be really cool if you could make a tutorial doing something like how to make draggable panels like this