manually address #1895

less/variables.less

@@ -61,6 +61,9 @@
 // Input placeholder text color
 @placeholderText:         @grayLight;
 
+// Hr border color
+@hrBorder:                @grayLighter;
+
 // Navbar
 @navbarHeight:                    40px;
 @navbarBackground:                @grayDarker;