Absolute positioning suspension layer style compatibility problem

wrote a web page to embed the PC client. Now I encounter a problem:

:
position: absolute;
z-index:100;
background:-sharpFFF;
...
PCwin7win10

position:fixed is useless, is it because of some css compatibility issue

Jun.22,2022

add a background color to your suspension box, background-color:-sharpfff

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-64f5-1b2c2b0-2baeb.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b2c2b0-2baeb.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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