add tagline and about sections

app/page.tsx

@@ -1,9 +1,13 @@
 import { Hero } from "./components/Hero";
+import { Tagline } from "./components/Tagline";
+import { About } from "./components/About";
 
 export default function Home() {
   return (
     <main>
       <Hero />
+      <Tagline />
+      <About />
     </main>
   );
 }