nav.js: hide CM scrollbars and scroll border

Author: pepc84

assets/nav.js

@@ -63,9 +63,13 @@
       html.dark-pre body { background:#1a1a2e !important; }
       pre#code-pre { display:none !important; }
       .syntax-block { display:none !important; }
+      .CodeMirror-scroll { border:none !important; background:transparent !important; }
+      .CodeMirror-hscrollbar, .CodeMirror-vscrollbar { display:none !important; }
 
       pre#code-pre { display:none !important; }
       .syntax-block { display:none !important; }
+      .CodeMirror-scroll { border:none !important; background:transparent !important; }
+      .CodeMirror-hscrollbar, .CodeMirror-vscrollbar { display:none !important; }
 
       #site-nav {
         border-bottom: 1px solid #e0e0e0;