refactor: remove unused styles (#1234)

Author: setchy

index.html

@@ -33,18 +33,6 @@
       height: 100%;
     }
 
-    .notification-exit {
-      transform: translate3d(0px, 0, 0);
-      opacity: 1;
-      transition-duration: 250ms;
-      transition-timing-function: cubic-bezier(0.175, 0.665, 0.32, 1), linear;
-    }
-
-    .notification-exit.notification-exit-active {
-      transform: translate3d(350px, 0, 0);
-      opacity: 0;
-    }
-
     #nprogress {
       pointer-events: none;
     }