#adminmenu

#adminmenu #toplevel_page_{menu-slug} div.wp-menu-image::before {
content: '\f174';
}

when I use the code above I'm able to change all the menu icons, how do I zero in on one changing one icon

this url

https://bungeshea.com/change-wordpress-admin-menu-icons/
gave me the code for changing all icons. Is there code to change one icon at a time or a video or instruction to work on one icon at a time, thanks