Why can't the white background of element's table come off?

I want to get rid of the white background. I don"t need a background color, but I can"t get rid of one. El-table tr set transparent does not work

May.18,2022
Add class to the attribute

row-class-name, and then style the class.


seems to be because the whole table has a white background, so we should set

together.
.el-table, .el-table__expanded-cell {
    background-color: transparent;
}

el-table th, .el-table tr {
    background-color: transparent;
}
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-64f5-1e9edb8-1a0c.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e9edb8-1a0c.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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