diff --git a/assets/css/main.css b/assets/css/main.css
index 0f3a2d8..ff6d153 100644
--- a/assets/css/main.css
+++ b/assets/css/main.css
@@ -226,7 +226,7 @@ footer#colophon .wp-block-columns:not(.is-not-stacked-on-mobile) > .wp-block-col
     flex-basis: auto !important;
 }
 
-@media (min-width: 640px) {
+@media (min-width: 770px) {
     header#masthead {
         display: flex;
         flex-direction: row;