extend animation and keyframes instead of overwriting them

tailwind.config.ts

@@ -3,7 +3,7 @@ import { type Config } from "tailwindcss";
 export default {
   content: ["./src/**/*.{js,ts,jsx,tsx}"],
   theme: {
-    extend: {},
+    extend: {
       animation: {
         marquee: "marquee 25s linear infinite",
         marquee2: "marquee2 25s linear infinite",
@@ -19,5 +19,6 @@ export default {
         },
       },
     },
+  },
   plugins: [require("tailwindcss-radix")()],
 } satisfies Config;