How to set datatables to change the default font size and column width

I don"t know how to modify it. I have tried many methods without success. Please give me some advice

Mar.07,2021

find class, plus! important modify style

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-64f5-1b31fbf-341a4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b31fbf-341a4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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