css - How do I add a "popup" shadow to an HTML element -

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how can give popup effect shadow? see commonly on different websites (e.g. https://www.smartrecruiters.com) @ edge of content holder, has dark shadow popup effect.

popup effect

is there specific name it? can create effect on both side of body?

is element style alright or styles recommended in css?

additionally, if don't feel entirely confident tweaking code, can use 1 of various free box-shadow code generators, here's 1 use:

http://css3gen.com/box-shadow/

then copy , paste code, browser specific syntax well. safer option if don't know css.


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