Breaking down CSS Box Shadow vs. Drop Shadow
https://css-tricks.com/breaking-css-box-shadow-vs-drop-shadow/ [css-tricks.com]
2017-10-21 14:35
Not too long after box-shadow was introduced, a working draft for CSS Filters surfaced and, with it, a method for drop-shadow() that looks a lot like box-shadow at first glance. However, the two are different and it’s worth comparing those differences.
source: L