Update markdown-dark.css

Author: benhatsor

live-view/extensions/markdown-dark.css

@@ -102,8 +102,9 @@ body a {
   color: var(--link-color);
   text-decoration: none;
 }
-
-body a:hover {
+
+body:not(.mobile) a:hover,
+body.mobile a:active {
   text-decoration: underline;
 }