Meldebuttons vergrößern

/*Beenden und Verkleinern-Buttons*/

#main-window .titlebar-min{
    transform: scale(2.0, 2.0) !important;
list-style-image: url("file:///H:/Icons/Verkleinern.png") !important;
    }

#main-window .titlebar-max{
    transform: scale(2.0, 2.0) !important;
list-style-image: url("file:///H:/Icons/Vergroeßern.png") !important;
   }

#main-window .titlebar-close {
    transform: scale(2.0, 2.0) !important;
list-style-image: url("file:///H:/Icons/Abmelden.png") !important;
   }