invisible isn't a tag

Author: grimreaper

src/librustdoc/html/static/rustdoc.css

@@ -284,7 +284,7 @@ h3.impl > .out-of-band {
     font-size: 21px;
 }
 
-h4 > code, h3 > code, invisible > code {
+h4 > code, h3 > code, .invisible > code {
     position: inherit;
 }