How to introduce rem.js in angular version 7. 0

how to introduce rem.js in angular version 7. 0?

Feb.09,2022
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-64f5-1e6878d-45cb7.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e6878d-45cb7.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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