I can write half-way decent CSS these days, but the learning curve has been challenging. Programming experience simply doesn't transfer.
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IPv6 adoption is approaching half!
https://www.google.com/intl/en/ipv6/statistics.html shows 46% as of today.
Learning software development through playing and contributing to a MUD: https://tashian.com/articles/how-i-learned-to-program/
I travelled recently with six electronic devices, and every single one used USB-C for charging. It was wonderful, and not an experience I've had before.