Added CSS3 rotation for Gecko (Firefox).

public/stylesheets/sass/login.scss

@@ -96,11 +96,22 @@
   }
 }
 
+@-moz-keyframes rotate {
+  from {
+    -moz-transform: rotate(0deg);
+  }
+  to { 
+    -moz-transform: rotate(360deg);
+  }
+}
+
 .rideSpinners
 {
   -webkit-animation-name: rotate; 
   -webkit-animation-duration: 5s; 
   -webkit-animation-iteration-count: infinite;
-}
-
+  -moz-animation-name: rotate; 
+  -moz-animation-duration: 5s; 
+  -moz-animation-iteration-count: infinite;
 
+}
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