firefox fallback

Author: hojberg

public/css/app.css

@@ -33,8 +33,9 @@ input[type='radio']           { border: 0; }
 ====================================================== */
 /* preview */
 .arrow_box                        { padding: 40px; width: 280px; height: 100px; border-radius: 6px; 
+  -moz-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
+
   -webkit-filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.3));
-  -moz-filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.3));
   filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.3));
 }