This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
Post
Chris Coyier
chriscoyier.net
did:plc:xhhcrzsilpamjmz4dvrpt7df
Thread and video in case you've feeling the "Oh no! CodePen is going to be different!" feels.
2.0 can be almost identical to Classic, only dipping into new features when you're ready.
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2026-03-26T22:43:08.555Z