In the "getting started", you should put the .js and .css files somewhere so the examples work. I copypasted all your codelines just to be dissappointed that it doesnt not work. I understand you probably don't want to be a cdn. But for testing purposes, I cannot be assed to copy stuff over to my server. I prefixed them with https://golden-layout.com/assets/ and it nicely worked. Nice. Bookmarked.