diff --git a/css/index.css b/css/index.css
index ea83b30..5160d21 100644
--- a/css/index.css
+++ b/css/index.css
@@ -20,7 +20,7 @@ body {
 }
 
 /* header menu hides on mobile screen, no padding needed anymore */
-@media screen and (max-width:40em) {
+@media screen and (max-width:39.99em) {
     .header {
         padding-bottom:0.7rem;
     }