Add square-title-buttons.css optional feature, related to #77

README.md

@@ -124,7 +124,9 @@ Alternatively you can run installation script with `-g` flag to auto install GNO
 	
 	*This feature is included by default for Firefox 70+*
 	
+- **square-title-buttons.css**
 
+	Use square title buttons old style.
 
 - **active-tab-contrast.css**
 

theme/square-title-buttons.css

@@ -0,0 +1,14 @@
+/* Square title buttons old style */
+
+@namespace xul url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
+
+:root[tabsintitlebar] #titlebar .titlebar-button {
+	border-radius: 5px !important;
+	height: 34px !important;
+	margin: 0 3px !important;
+	width: 34px !important;
+}
+
+:root[tabsintitlebar] #titlebar:-moz-window-inactive .titlebar-button {
+	border-color: transparent !important;
+}

userChrome.css

@@ -17,6 +17,8 @@
  * This feature is included by default for Firefox 70+ */
 /*@import "theme/matching-autocomplete-width.css"; /**/
 
+/* Use square title buttons old style. */
+/*@import "theme/square-title-buttons.css"; /**/
 
 /* Active tab high contrast */
 /*@import "theme/active-tab-contrast.css"; /**/