How to achieve this effect of covering the top at the bottom of the sliding page?

I have tried several methods myself, all of which can only cover the background, but not the text above. Find the method

the environmental background of the problems and what methods you have tried

related codes

/ / Please paste the code text below (do not replace the code with pictures)

what result do you expect? What is the error message actually seen?

Jun.10,2022

z-index order?


background picture setting background-attachment:fixed


Thank you. The problem is solved because the z-index is invalid.

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-64f5-1e48ecd-44cf0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e48ecd-44cf0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?