fix scrolling on feature report

htdocs/css/openwebrx-globals.css

@@ -4,5 +4,5 @@ html, body
     padding: 0;
     height: 100%;
     font-family: "DejaVu Sans", Verdana, Geneva, sans-serif;
-    overflow: hidden;
 }
+

htdocs/css/openwebrx.css

@@ -21,6 +21,10 @@
 @import url("openwebrx-header.css");
 @import url("openwebrx-globals.css");
 
+html, body {
+	overflow: hidden;
+}
+
 select
 {
 	font-family: "DejaVu Sans", Verdana, Geneva, sans-serif;