LESS: Import grid only for 768+

library/less/style.less

@@ -18,9 +18,6 @@ of the styles inside media queries.
 // import normalize
 @import "_normalize.less";
 
-// import grid
-@import "_grid.less";
-
 // import mixins
 @import "_mixins.less";
 
@@ -55,6 +52,9 @@ you can add resource intensive styles.
 */
 @media only screen and (min-width: 768px) {
 
+	// import grid
+	@import "_grid.less";
+
 	// styles in 768up.less
 	@import "_768up.less";