+#wp-auth-check-form.loading:before {
+ content: "";
+ display: block;
+ width: 20px;
+ height: 20px;
+ position: absolute;
+ right: 50%;
+ top: 50%;
+ margin: -10px -10px 0 0;
+ background: url(../images/spinner.gif) no-repeat center;
+ -webkit-background-size: 20px 20px;
+ background-size: 20px 20px;
+ -webkit-transform: translateZ(0);
+ transform: translateZ(0);
+}
+
+@media print,
+ (-webkit-min-device-pixel-ratio: 1.25),
+ (min-resolution: 120dpi) {
+
+ #wp-auth-check-form.loading:before {
+ background-image: url(../images/spinner-2x.gif);
+ }
+
+}
+