The problem is webdevs don't do that. They say "98% is fine" and then don't program any fallback, or worse, actively block users that don't meet 100% compatibility.
Probably because that extra 2% (or whatever figure) isn’t terrible valuable in the first place. Sometimes the best answer is “they’ll need to update their stuff”.
Probably because that extra 2% (or whatever figure) isn’t terrible valuable in the first place. Sometimes the best answer is “they’ll need to update their stuff”.