What is the meaning of the + sign in .xxx: checked+.xxx:after in css?

.xxx is a class that does not affect

Css3 html5 css javascript
Mar.21,2021

elementA+elementB Select all elementB immediately following elementA .

is next to the selector. Choose the sibling .xxx: after element closest to question .xxx: checked,
http://www.runoob.com/cssref/.

to find the next element next to one element, in other popular words: find the next brother. For example: eldest brother + younger brother, you can find the second.
the document is in here

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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-64f5-49aeacc-10624.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-49aeacc-10624.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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