Added autohide with animation for flash message

app/assets/tailwind/application.css

@@ -1 +1,16 @@
 @import "tailwindcss";
+
+@theme {
+    /* 1. Die CSS-Variable für die Animation definieren */
+    --animate-shrink: shrink 5s linear forwards;
+
+    /* 2. Die dazugehörigen Keyframes festlegen */
+    @keyframes shrink {
+        0% {
+            transform: scaleX(1);
+        }
+        100% {
+            transform: scaleX(0);
+        }
+    }
+}