diff --git a/skin/classic/treestyletab/square/square.css b/skin/classic/treestyletab/square/square.css
index ad05a219..ca331fe1 100644
--- a/skin/classic/treestyletab/square/square.css
+++ b/skin/classic/treestyletab/square/square.css
@@ -8,7 +8,7 @@
 	margin: 0;
 	-moz-appearance: none;
 }
-.tabbrowser-strip[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) {
+.tabbrowser-strip[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"]) {
 	background: darkgray !important;
 	-moz-appearance: none;
 }
@@ -16,8 +16,10 @@
 .tabbrowser-strip[treestyletab-style~="square"][treestyletab-mode="vertical"],
 #TabsToolbar[treestyletab-style~="square"][treestyletab-mode="vertical"],
 .tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"],
-.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"] .tabbrowser-arrowscrollbox,
-.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"] .tabs-container {
+.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"]
+  .tabbrowser-arrowscrollbox,
+.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"]
+  .tabs-container {
 	height: auto !important;
 	max-height: none !important;
 	padding-left: 0 !important;
@@ -43,14 +45,19 @@
 	-moz-border-left-colors: none !important;
 }
 
-.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"] .tabs-left,
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tabs-bottom,
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tab-text-shadow /* Mac OS X */ {
+.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"]
+  .tabs-left,
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tabs-bottom,
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tab-text-shadow /* Mac OS X */ {
 	display: none !important;
 }
 
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab,
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab:not([selected="true"]) {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab,
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab:not([selected="true"]) {
 	-moz-appearance: none !important;
 	min-height: 2em;
 	margin: 0 !important;
@@ -68,15 +75,18 @@
 	-moz-border-radius-bottomright : 0 !important;
 	-moz-box-align: stretch !important;
 }
-.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"][treestyletab-firsttab-border="true"] .tabbrowser-tab:not([selected="true"]):first-child {
+.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"][treestyletab-firsttab-border="true"]
+  .tabbrowser-tab:not([selected="true"]):first-child {
 	-moz-border-top-colors: ThreeDShadow transparent !important;
 }
 
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tab-icon-image {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tab-icon-image {
 	margin-left: 0;
 }
 
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab[selected="true"] {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab[selected="true"] {
 	margin: 0 !important;
 	padding: 0 0.2em !important;
 	background-color: ThreeDHighlight !important;
@@ -84,10 +94,14 @@
 	-moz-border-bottom-colors: ThreeDShadow transparent !important;
 }
 
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab > .tab-image-left,
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab > .tab-image-right,
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab:not([selected="true"]) > .tab-image-left,
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab:not([selected="true"]) > .tab-image-right {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab > .tab-image-left,
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab > .tab-image-right,
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab:not([selected="true"]) > .tab-image-left,
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab:not([selected="true"]) > .tab-image-right {
 	height: auto;
 	margin: 0 !important;
 	padding: 0 !important;
@@ -96,45 +110,59 @@
 }
 
 
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab > .tab-image-middle,
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab > .tab-close-button,
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab:not([selected="true"]):not(:hover) > .tab-image-middle,
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab:not([selected="true"]):not(:hover) > .tab-image-middle > .tab-close-button {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab > .tab-image-middle,
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab > .tab-close-button,
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab:not([selected="true"]):not(:hover) > .tab-image-middle,
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab:not([selected="true"]):not(:hover) > .tab-image-middle > .tab-close-button {
 	height: auto;
 	margin: 0 !important;
 	padding: 0 !important;
 	background: transparent;
 }
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab[selected="true"] > .tab-image-middle,
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab[selected="true"] > .tab-close-button {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab[selected="true"] > .tab-image-middle,
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab[selected="true"] > .tab-close-button {
 	background: transparent;
 }
 
-.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"] .tabbrowser-tab,
-.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"] .tabbrowser-tab:not([selected="true"]) {
+.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"]
+  .tabbrowser-tab,
+.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"]
+  .tabbrowser-tab:not([selected="true"]) {
 	border-left: 2px solid !important;
 	-moz-border-left-colors: ThreeDLightShadow transparent !important;
 	border-right: 2px solid !important;
 	-moz-border-right-colors: ThreeDLightShadow transparent !important;
 }
-.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"] .tabbrowser-tab[selected="true"] {
+.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"]
+  .tabbrowser-tab[selected="true"] {
 	-moz-border-left-colors: ThreeDLightShadow transparent !important;
 	-moz-border-right-colors: ThreeDLightShadow transparent !important;
 }
 
-.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"] .tabbrowser-tab .tab-close-button {
+.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"]
+  .tabbrowser-tab .tab-close-button {
 	margin-right: 0 !important;
 }
 
-.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-tabbar-position="bottom"] .tabbrowser-tab,
-.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-tabbar-position="bottom"] .tabbrowser-tab:not([selected="true"]) {
+.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-tabbar-position="bottom"]
+  .tabbrowser-tab,
+.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-tabbar-position="bottom"]
+  .tabbrowser-tab:not([selected="true"]) {
 	border-right: 2px solid !important;
 	-moz-border-right-colors: ThreeDShadow transparent !important;
 	border-left: 2px solid !important;
 	-moz-border-left-colors: ThreeDShadow transparent !important;
 }
 
-.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"] .tabbrowser-tab { /* Mac OS X */
+/* Mac OS X */
+.tabbrowser-tabs[treestyletab-style~="square"][treestyletab-mode="vertical"]
+  .tabbrowser-tab {
 	text-align: start !important; 
 	-moz-box-pack: start !important;
 }
@@ -145,54 +173,57 @@
 .tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"]) {
 	background: transparent !important;
 }
-.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"]) {
-	border-right: 1px solid #aaa !important;
-}
-.tabbrowser-tabs[treestyletab-style~="vertigo"][reestyletab-tabbar-position="right"] {
-	border-left: 1px solid #aaa !important;
-}
-.tabbrowser-tabs[treestyletab-style~="vertigo"][treestyletab-tabbar-position="bottom"] {
-	border-top: 1px solid #aaa !important;
-}
 
-.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab:not([selected="true"]) {
+.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab:not([selected="true"]) {
 	background: transparent !important;
 	-moz-border-top-colors: transparent transparent !important;
 	-moz-border-bottom-colors: transparent transparent !important;
 }
-.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab:not([selected="true"]):hover {
+.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab:not([selected="true"]):hover {
 	background-color: #e0e8f6 !important;
 	-moz-border-top-colors: #e0e8f6 #e0e8f6 !important;
 	-moz-border-bottom-colors: #e0e8f6 #e0e8f6 !important;
 }
-.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab[selected="true"] {
+.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab[selected="true"] {
 	background-color: #c1d2ee !important;
 	-moz-border-top-colors: #c1d2ee #c1d2ee !important;
 	-moz-border-bottom-colors: #c1d2ee #c1d2ee !important;
 }
-.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab[selected="true"]:hover {
+.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab[selected="true"]:hover {
 	background-color: #d1e2fe !important;
 	-moz-border-top-colors: #d1e2fe #d1e2fe !important;
 	-moz-border-bottom-colors: #d1e2fe #d1e2fe !important;
 }
 
-.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab:not([selected="true"]),
-.tabbrowser-tabs[treestyletab-style~="vertigo"][treestyletab-mode="vertical"][treestyletab-tab-inverted="true"] .tabbrowser-tab:not([selected="true"]) {
+.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab:not([selected="true"]),
+.tabbrowser-tabs[treestyletab-style~="vertigo"][treestyletab-mode="vertical"][treestyletab-tab-inverted="true"]
+  .tabbrowser-tab:not([selected="true"]) {
 	-moz-border-left-colors: transparent transparent !important;
 	-moz-border-right-colors: transparent transparent !important;
 }
-.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab:not([selected="true"]):hover,
-.tabbrowser-tabs[treestyletab-style~="vertigo"][treestyletab-mode="vertical"][treestyletab-tab-inverted="true"] .tabbrowser-tab:not([selected="true"]):hover {
+.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab:not([selected="true"]):hover,
+.tabbrowser-tabs[treestyletab-style~="vertigo"][treestyletab-mode="vertical"][treestyletab-tab-inverted="true"]
+  .tabbrowser-tab:not([selected="true"]):hover {
 	-moz-border-left-colors: #e0e8f6 #e0e8f6 !important;
 	-moz-border-right-colors: #e0e8f6 #e0e8f6 !important;
 }
-.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab[selected="true"],
-.tabbrowser-tabs[treestyletab-style~="vertigo"][treestyletab-mode="vertical"][treestyletab-tab-inverted="true"] .tabbrowser-tab[selected="true"] {
+.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab[selected="true"],
+.tabbrowser-tabs[treestyletab-style~="vertigo"][treestyletab-mode="vertical"][treestyletab-tab-inverted="true"]
+  .tabbrowser-tab[selected="true"] {
 	-moz-border-left-colors: #c1d2ee #c1d2ee !important;
 	-moz-border-right-colors: #c1d2ee #c1d2ee !important;
 }
-.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"]) .tabbrowser-tab[selected="true"]:hover,
-.tabbrowser-tabs[treestyletab-style~="vertigo"][treestyletab-mode="vertical"][treestyletab-tab-inverted="true"] .tabbrowser-tab[selected="true"]:hover {
+.tabbrowser-tabs[treestyletab-style~="vertigo"]:not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab[selected="true"]:hover,
+.tabbrowser-tabs[treestyletab-style~="vertigo"][treestyletab-mode="vertical"][treestyletab-tab-inverted="true"]
+  .tabbrowser-tab[selected="true"]:hover {
 	-moz-border-left-colors: #d1e2fe #d1e2fe !important;
 	-moz-border-right-colors: #d1e2fe #d1e2fe !important;
 }
@@ -200,69 +231,84 @@
 
 /* Mixed style */
 
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"])[treestyletab-mode="vertical"] .tabbrowser-tab {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"])[treestyletab-mode="vertical"]
+  .tabbrowser-tab {
 	-moz-border-right-colors: transparent transparent !important;
 	-moz-border-left-colors: transparent transparent !important;
 }
 
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"]) .tabbrowser-tab:not([selected="true"]):hover {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab:not([selected="true"]):hover {
 	background-color: #e0e8f6 !important;
 	-moz-border-top-colors: #e0e8f6 transparent !important;
 	-moz-border-left-colors: #e0e8f6 transparent !important;
 }
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"])[treestyletab-mode="vertical"][treestyletab-firsttab-border="true"] .tabbrowser-tab:first-child:not([selected="true"]):hover {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"])[treestyletab-mode="vertical"][treestyletab-firsttab-border="true"]
+  .tabbrowser-tab:first-child:not([selected="true"]):hover {
 	-moz-border-top-colors: ThreeDShadow #e0e8f6 !important;
 }
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"])[treestyletab-mode="vertical"][treestyletab-tab-inverted="true"] .tabbrowser-tab:not([selected="true"]):hover {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"])[treestyletab-mode="vertical"][treestyletab-tab-inverted="true"]
+  .tabbrowser-tab:not([selected="true"]):hover {
 	-moz-border-right-colors: #e0e8f6 transparent !important;
 }
 
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"]) .tabbrowser-tab[selected="true"] {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab[selected="true"] {
 	background-color: #c1d2ee !important;
 	-moz-border-top-colors: #c1d2ee transparent !important;
 	-moz-border-left-colors: #c1d2ee transparent !important;
 }
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"])[treestyletab-mode="vertical"][treestyletab-firsttab-border="true"] .tabbrowser-tab:first-child[selected="true"] {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"])[treestyletab-mode="vertical"][treestyletab-firsttab-border="true"]
+  .tabbrowser-tab:first-child[selected="true"] {
 	-moz-border-top-colors: ThreeDShadow #c1d2ee !important;
 }
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"])[treestyletab-mode="vertical"][treestyletab-tab-inverted="true"] .tabbrowser-tab[selected="true"] {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"])[treestyletab-mode="vertical"][treestyletab-tab-inverted="true"]
+  .tabbrowser-tab[selected="true"] {
 	-moz-border-right-colors: #c1d2ee transparent !important;
 }
 
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"]) .tabbrowser-tab[selected="true"]:hover {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab[selected="true"]:hover {
 	background-color: #d1e2fe !important;
 	-moz-border-top-colors: #d1e2fe transparent !important;
 	-moz-border-left-colors: #d1e2fe transparent !important;
 }
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"])[treestyletab-mode="vertical"][treestyletab-firsttab-border="true"] .tabbrowser-tab:first-child[selected="true"]:hover {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"])[treestyletab-mode="vertical"][treestyletab-firsttab-border="true"]
+  .tabbrowser-tab:first-child[selected="true"]:hover {
 	-moz-border-top-colors: ThreeDShadow #d1e2fe !important;
 }
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"])[treestyletab-mode="vertical"][treestyletab-tab-inverted="true"] .tabbrowser-tab[selected="true"]:hover {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"])[treestyletab-mode="vertical"][treestyletab-tab-inverted="true"]
+  .tabbrowser-tab[selected="true"]:hover {
 	-moz-border-right-colors: #d1e2fe transparent !important;
 }
 
 
 /* tab surface */
 
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"]) .tabbrowser-tab,
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"]) .tabbrowser-tab:not([selected="true"]) {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab,
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab:not([selected="true"]) {
 	background-image: url("tab-bg.png") !important;
 	background-repeat: repeat-x !important;
 	background-position: 1px 1px !important;
 }
 
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"]) .tabbrowser-tab[selected="true"] {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab[selected="true"] {
 	background-image: url("tab-bg-highlighted.png") !important;
 }
 
 /* animation */
 
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"]) .tabbrowser-tab:not([selected="true"]):hover {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab:not([selected="true"]):hover {
 	background-color: ThreeDFace !important;
 	background-image: url("tab-bg-hover.png") !important;
 }
 
-.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"]) .tabbrowser-tab[selected="true"]:hover {
+.tabbrowser-tabs[treestyletab-style~="square"]:not([treestyletab-style~="vertigo"]):not([treestyletab-tabbar-position="top"])
+  .tabbrowser-tab[selected="true"]:hover {
 	background-color: #c1d2ee !important;
 	background-image: url("tab-bg-selected-hover.png") !important;
 }