Lightweight loading button

public/scripts/extensions/caption/style.css

@@ -22,15 +22,3 @@
 #img_form {
     display: none;
 }
-
-.spin {
-    animation-name: spin;
-    animation-duration: 2000ms;
-    animation-iteration-count: infinite;
-    animation-timing-function: linear;
-}
-
-@keyframes spin {
-    from {transform:rotate(0deg);}
-    to {transform:rotate(360deg);}
-}