modified frames

.config/gtk-3.0/shared.css

@@ -12,15 +12,26 @@
     background: @bg_color;
 }
 
+
 /* inherit colors from parent */
 * {
     background-color: inherit;
     color: inherit;
+    border-color: shade(@bg_color, 0.8);
 }
 
 *:hover {
     color: @acc1_color;
 }
+/*
+.frame {
+    border-color: shade(@bg_color, 0.8);
+}
+
+.frame.flat {
+    border: none;
+}
+*/
 
 .view,
 .cell {