Invalid Bootstrap4 input-group-btn

   


  excuse me, what"s going on? Am I missing something?
Css html html5 bootstrap
Mar.09,2021

bootstrap update log
you introduce nothing less, it is bootstrap4 that discards .input-group-btn , you can use .input-group-append instead.

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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-64f5-1b39848-2c1a8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b39848-2c1a8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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