added standard ui

src/pages/index.astro

@@ -1,9 +1,21 @@
 ---
 import Layout from '../layouts/Layout.astro'
+import Button from '../components/ButtonComponent/Button.tsx'
 ---
 
 <Layout title="Home">
-  <main>
-    <h1>This is just a template</h1>
+  <main class="page">
+    <h1>Main Page</h1>
+    <Button label="Next Page" to="/next" />
   </main>
 </Layout>
+
+<style lang="sass">
+  .page
+    display: flex
+    flex-direction: column
+    text-align: center
+    justify-content: center
+    align-items: center
+    margin: 2rem
+</style>