make menu scrollable

Author: ukane-philemon

cmd/dcrdata/views/extras.tmpl

@@ -98,7 +98,7 @@
 				<span class="patty"></span>
 				<span class="patty"></span>
 				<span class="patty short"></span>
-				<div id="menu">
+				<div id="menu" style="max-height: 90vh; overflow-x: hidden;">
 					<a class="menu-item" data-keynav-skip href="/" title="Home">Home</a>
 					<a class="menu-item" data-keynav-skip href="/blocks" title="Decred blocks">Blocks</a>
 					<a class="menu-item" data-keynav-skip href="/mempool" title="Decred mempool">Mempool</a>