Sometimes we have to deal with VERY old browsers and devices.
I work as a software dev in the hospitality industry. We regularly see requests from Android 1.6 and iOS 4.x, for example.
We use quite a number of polyfills in order to keep our codebase (and developers) sane.
Luckily, we are long past the days of needing to support IE6 and 7. 🥳
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