How to create shadow effect in CSS3?
The box-shadow property is used to add shadow effects around any element’s frame. Users can set multiple effects to a portion separated by commas. Usually, it is described by X and Y offsets relative to the part, color, and blur and spread radii.
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BY Best Interview Question ON 22 Feb 2020
Example
#box {
box-shadow: 3px 13px #999999;
}