XFCE does not apply GTK3 theme on pager | Linux Mint Community🍵 | Page 1

After messing with XFCE4 panel (from horizontal to vertical to deskbar and back), my workspace switcher got borked. I removed it, put it back and does not respect gtk.css anymore.
XFCE4 and GTK Inspector reports the workspace switcher item in my panel as pager-3.

/* Whiskermenu view... */
#whiskermenu-window treeview {
  padding: 3px;
}

/* Workspace indicator... */
#pager-3 grid {
    background-color: rgba(255,255,255,0.05);
    margin: 4px;
    border-radius: 3px;
}
#pager-3 button {
    padding: 3px;
    margin: 5px;
    background-color: transparent;
}
#pager-3 button:hover {
    background-color: rgba(255,255,255,0.05);
}
#pager-3 button:checked {
    box-shadow: none;
    background-color: #1f9ede ;
    color: #FFF;
}

/* #8fbcbb */

Already solved. I forgot that workspace switcher uses miniature view by default.

#XFCE does not apply GTK3 theme on pager