Use: click "Ready" to start; at the end, click "0:00" to reset. Defaut is 5 minutes with a caution color at 2 minutes and warning color at 1 minute. To customize the time, add "#" with time,warning (for example, one minute with warning at 30 sec: lightning-time/index.html#60,30).
About: Super simple web page based timer with a buzzer for UI GIS Day 2017 lightning talks. Inspired by and based on timer and lightningtimer projects. Get the code.
