How does svg do this inner shadow effect?

ask for advice on how to achieve this inner shadow effect in svg

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-64f5-1b2b015-2adc2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b2b015-2adc2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?