diff --git a/dev.less b/dev.less
index b4cafb5..62d7634 100644
--- a/dev.less
+++ b/dev.less
@@ -105,7 +105,7 @@ display: block !important;
 
 
 /* desktop only */
-@media (min-width: 990px) {
+@media (min-width: 989px) {
     body{
             background:#ff8;
     }
@@ -135,7 +135,7 @@ display: block !important;
 }
 
 /* mobile & ipad only */
-@media (max-width: 991px) {
+@media (max-width: 990px) {
     body{
             background:#0ff;
     }