Discord: Highlight current server by keltroth

/* ==UserStyle==
@name           discord.com
@namespace      github.com/openstyles/stylus
@version        1.0.0
@description    Highlight current server
@author         Django Janny
==/UserStyle== */
@-moz-document domain("discord.com") {
    /* Insert code here... */
    [aria-label="Serveurs"] [class*="listItem__"] {
        opacity: 0.2;
    }

    [aria-label="Serveurs"] [class*="listItem__"]:has([class*="selected_"]) {
        opacity: 1;
    }
}