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Learn how to code UI animation in CSS and JavaScript [Web App, Design Tools, User Experience]
last checked Jul 13, 2026 · Timeout
CohortClass of 2017What it is
Learn how to code UI animation in CSS and JavaScript [Web App, Design Tools, User Experience]
HTTP liveness
11 probes since Jun 16Jun 16Jul 13
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 16, 2026First probe — unverifiedTimeout
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Pulse Indexobserved activity
142/4 signal families
Liveness40%0.20
Press30%no data
GitHub20%no data
Tranco10%0.60
Weighted observed activity · updated Jul 15
Cohort survival · Class of 2017weekly
13,497 products launched in 2017 · 100% still active
13,462 active35 sunset
Still active
100%
Median lifespan
4.9y