Fix rustdoc sidebar z-index

Enity · Enity · commit 40536548f998 · 2019-04-14T22:54:08.000+03:00
diff --git a/src/librustdoc/html/static/rustdoc.css b/src/librustdoc/html/static/rustdoc.css
@@ -166,6 +166,7 @@ nav.sub {
 	top: 0;
 	height: 100vh;
 	overflow: auto;
+	z-index: 1;
 }
 
 .sidebar .block > ul > li {
