What is the color of the outer frame of input?

<input type="text" style="border-width: 0">
The

code is as above, and the effect is as follows. When focus, there is a blue border, but the corresponding style is not found. It is normal when it is not focus.

clipboard.png

Css
Nov.26,2021

focus has a blue border, usually with the following three attributes:

:focus {
    border-color: -sharp57a3f3; //
    outline: -webkit-focus-ring-color auto 5px; //outline
    box-shadow: 0 0 0 2px rgba(45,140,240,.2); //box-shadow
}

it would be nice to get rid of all the above three attributes.


outline:none


:focus{
    outline:none;
}

clipboard.png
outline:none;

clipboard.png

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-64f5-1e4540a-44b1b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e4540a-44b1b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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