How can i do remove background picture from friends activity?

[lionnesquaer]

Hello!
I make light theme, but i cant remove black backround picture from friends list. Looks bad. Iwrite this in user.css: (What is wrong?)

}

[dir].EmptyFriendFeed__cta--bg-1{
/*
background-image: url(data:image/svg+xml;base64,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);*/

}

[lionnesquaer]

Thats all, im already did myself! there is need to be write
}
[dir] .EmptyFriendFeed__cta--bg-1{
background-image:none;
}

PS After all this not work too unfortunately. Works only once run Spotify. After reload parameter changing to [dir] .EmptyFriendFeed__cta--bg-2 and so to infinity like i understand

[Bluscream]

Why not use other attribute if class changes?

[lionnesquaer]

Actually i dont understand nothing in css and programming. So i use blind shout method)

[Bluscream]

Even though your theme looks nice thats not good method, atleast look at existing themes?

[lionnesquaer]

So i did. Background picture not removed from existing themes.
I dont have example