diff --git a/web/viewer.css b/web/viewer.css
index 1684900fa..3313ce3cb 100644
--- a/web/viewer.css
+++ b/web/viewer.css
@@ -247,11 +247,11 @@ canvas {
   line-height:1.3;
 }
 
-::selection { background:rgba(0,0,255,0.3); }
-::-moz-selection { background:rgba(0,0,255,0.3); }
 /* TODO: file FF bug to support ::-moz-selection:window-inactive
    so we can override the opaque grey background when the window is inactive;
-   see also http://css-tricks.com/9288-window-inactive-styling */
+   see https://bugzilla.mozilla.org/show_bug.cgi?id=706209 */
+::selection { background:rgba(0,0,255,0.3); }
+::-moz-selection { background:rgba(0,0,255,0.3); }
 
 #viewer {
   margin: 44px 0px 0px;