Windows. CSS Font Family doesn't work

[artemKerimoff]

Customising the Explorer panel in VS Code. I have set the following style for it:

/* File Explorer Item Label */
.monaco-tree .monaco-tree-row .label-name,
.monaco-list .monaco-list-row
.monaco-icon-label .label-name,
.monaco-highlighted-label {
    font-family: 'Geist Mono', monospace !important;
    font-size: 14px !important;
    font-weight: 400 !important;
    color: #FFF !important;
}

however, even when I run the ‘enable custom css and js’ command, it's as if the Geist Mono font is not visible and the default font with monospace is set.
this is how the explorer panel looks like after running the command:

and it should look like this (we are talking about the font):

[artemKerimoff]

By the way, other CSS methods work fine, for example, changing the font colour for the mtk3 class worked fine for me. the problem with font setting applies not only to the explorer class, but also to other classes, such as the same mtk3 class.

[suxscribe]

May be something with the font name, or the selector.
It states .monaco-highlighted-label in your example. But the style probably should apply to every label, not just highlighted.

Have you tried to change the font using Dev Tools?