Fix subnav aside close underline

source/css/organisms/subnav.pcss

@@ -6,8 +6,9 @@
   @apply absolute;
 }
 
-.subnav-aside__close {
-  @apply hidden absolute text-3xl pr-8 cursor-pointer right-0;
+.subnav-aside__close,
+.subnav-aside__close:hover {
+  @apply hidden absolute text-3xl pr-8 cursor-pointer right-0 no-underline;
 
   @screen xl {
     @apply block;