How to realize the effect of concave Shadow in css

how to realize the shadow effect of inner concave band.

May.12,2022

effect:

clipboard.png

HTML structure:

  https://codepen.io/mudontire/...

how about this?

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e99e11-4ec5f.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e99e11-4ec5f.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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