Revert "Removed comments unrelated to pr 2672 from variables/_layout.…

…scss (#2724)"

This reverts commit 3bc8d50.

_sass/variables/_layout.scss

@@ -12,16 +12,24 @@ $screen-mobile: 480px;
  * Breakpoint Start and End Declaration
  *
  * These are generally used for declaring media queries.
- * As an example, if a developer wants to make a media query for   
- * anything above a tablet, use the variable $bp-tablet-up. For  
+ * As an example, if a developer wants to make a media query for
+ * anything above a tablet, use the variable $bp-tablet-up. For
  * anything below a tablet, use $bp-below-tablet.
  */
+
+// Desktop Large
 $bp-desktop-large-up: '(min-width: #{$screen-desktop-large})';
 $bp-below-desktop-large: '(max-width: #{$screen-desktop-large - 1})';
+
+// Desktop
 $bp-desktop-up: '(min-width: #{$screen-desktop})';
 $bp-below-desktop: '(max-width: #{$screen-desktop - 1})';
+
+// Tablets
 $bp-tablet-up: '(min-width: #{$screen-tablet})';
 $bp-below-tablet: '(max-width: #{$screen-tablet - 1})';
+
+// Mobile
 $bp-mobile-up: '(min-width: #{$screen-mobile})';
 $bp-below-mobile: '(max-width: #{$screen-mobile - 1})';