:root {
	--zen-main-browser-background: var(
	  --mod-sameerasw-zen_transparency_color,
	  #00000000
	) !important;
  }
  
  #main-window {
	@media (-moz-bool-pref: "mod.sameerasw.zen_bg_img_enabled") {
	  background-image: url(--mod-sameerasw-zen_transparency) !important;
	  background-position: center !important;
	  background-repeat: no-repeat !important;
	  background-size: cover !important;
	}
  }