The problem when adding 0.5 px pixel border pseudo-class to the vue project

when writing the vue list, because we want to add the border of 0.5px, we can only use pseudo-class, but the pseudo-class is added to the parent element, but on the web page, the child element adds pseudo-class, and the parent element has no pseudo-class. I think it"s strange, is it the life cycle of vue?

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Mar.23,2021

you are equivalent to writing ul li *: before , it should be ul li:before


can not leave spaces, directly ul li:before

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-64f5-1e4ff0f-43feb.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e4ff0f-43feb.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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