[A reasonable, if unscientific, look at the performance of various common CSS methods][link], comparing things like Attribute .vs. Class-based selectors, box-sizing resets, floats .vs. flexbox .vs. inline-block, and a lot more.
Love that someone took the time to do this so I don’t have to.
[link]: https://github.com/mdo/css-perf “mdo/css-perf”