There is a small question about the definition of BFC in W3C.

definition in W3C :

Floats, absolutely positioned elements, block containers (such as inline-blocks, table-cells, and table-captions) that are not block boxes, and block boxes with "overflow" other than" visible" (except when that value has been propagated to the viewport) establish new block formatting contexts for their contents.

except when that value has been propagated to the viewport what is this exception?

Frontend javascript w3c html
Jun.18,2021

https://www.jianshu.com/p/cab.

Block box whose overflow value is not "visiable"

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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-64f5-1e93453-47208.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e93453-47208.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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