Custom CSS does not work on entry list

Clear and concise description of the problem

I wrote a piece of custom CSS,

div.inline.align-middle.hyphens-auto.font-medium:has(.i-mgc-translate-2-ai-cute-re) > span:first-child {
	color: gray;
	font-size: 80%;
}

which was working when I put it in the developer's tool of browser.

But when I put it in the custom CSS of APP setting, it did not work.

Suggested solution

I need to edit the CSS of entry list, so please help me.

Alternative

No response

Additional context

No response

Validations

• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.
• This issue is valid

Start by reproducing the custom CSS in the app settings and compare it with the browser developer tools result shown in the issue. Investigate why the selector does not affect the entry list. Done means the provided styling applies to the targeted entry-list text when configured through the app.