Show cursor on burger menu (fixes #256)

Change-Id: Id14904c3e526d422a53813dbfc9889634544f12f
diff --git a/dev/scss/media.scss b/dev/scss/media.scss
index ebf31ae..0d1a944 100644
--- a/dev/scss/media.scss
+++ b/dev/scss/media.scss
@@ -56,6 +56,7 @@
 
       &.show {
         display: block;
+        cursor: pointer;
       }
 
       &::after {