CSS JS How to make block shadow dots?

Question

css

How to make a div box shadow with polka dots (2 px dots) ?
How they do it now in modern design
About like here, Only not so much

Answer 1

This is not "modern design", these are empty decorations.
And they are made using pseudo-elements (it's easier this way) with absolute positioning and through background properties with repetition. Rustam Bainazarov gave you the correct reference in the comments .