Add Notification and new mini desing

frontend/src/index.css

@@ -20,3 +20,19 @@ body {
   width: 100%;
   height: 100vh;
 }
+
+/* Анимация для уведомлений */
+@keyframes slide-in-right {
+  from {
+    transform: translateX(100%);
+    opacity: 0;
+  }
+  to {
+    transform: translateX(0);
+    opacity: 1;
+  }
+}
+
+.animate-slide-in-right {
+  animation: slide-in-right 0.3s ease-out;
+}