diff --git a/src/scss/_variables.scss b/src/scss/_variables.scss
index ae63d17..31f82fb 100644
--- a/src/scss/_variables.scss
+++ b/src/scss/_variables.scss
@@ -18,4 +18,9 @@ $hover-duration: 0.3s;
 
 $github-color: #f3f3f3;
 $twitter-color: #26a6d1;
-$facebook-color: #3b5998;
\ No newline at end of file
+$facebook-color: #3b5998;
+
+$phone: 576px;
+$tablet: 768px;
+$desktop: 992px;
+$desktop-xl: 1200px;
\ No newline at end of file