diff --git a/blocks/header/header.css b/blocks/header/header.css
index ecdb99b..9a8b79d 100644
--- a/blocks/header/header.css
+++ b/blocks/header/header.css
@@ -102,6 +102,20 @@ body.dark-mode header nav .nav-sections .uk-subnav > li > a:hover {
   color: #fff;
 }
 
+body.dark-mode header nav .nav-hamburger > button,
+body header nav .nav-hamburger > button {
+  background-color: transparent !important;
+}
+
+body:not(.dark-mode) header nav .nav-hamburger > button {
+  border: none;
+  box-shadow: none !important;
+}
+
+body:not(.dark-mode) header nav .nav-hamburger > button > span {
+  color: #000;
+}
+
 /* hamburger */
 header nav .nav-hamburger {
   /* display: none; */