The box-shadow CSS property adds shadow effects around an element's frame. You can set multiple effects separated by commas. A box shadow is described by X and Y offsets relative to the element, blur and spread radius, and color.
The css box shadow property can be used to give block elements a drop shadow or an inner shadow.
let's take a close look at this css property.
box-shadow: 0 0 10px #000;
Source:
https://developer.mozilla.org/en-US/d...
https://www.w3schools.com/cssref/css3...