How to set the color of css select drop-down frame?

how to set the border color of the css select drop-down box?
set the gray in the picture to yellow as well.

Css
Sep.03,2021

Native select areas that can be modified include outer border, width and height, right small triangle,

the drop-down part cannot be modified, so there is no need to toss about

. There is no way to modify the style of the

drop-down section. If there is a visual requirement, you can use html to simulate select.


is not supported natively. You can use html to click and appear

.
<ul>
    <li></li>
</ul>

to simulate the drop-down box and select


it is recommended to use other tags to simulate the style in the drop-down box of select, select.


I have tried to modify it, but you can simulate the style of select with other elements


simulate select with other elements

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-64f5-1e5f455-4dbb1.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e5f455-4dbb1.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?