Fixed showcase and home page

src/pages/index.astro

@@ -27,11 +27,11 @@ const posts: Post[] = (await getCollection("projects"))
           Welcome to my realm!
 				</h2>
 
-				<h3 class="buttons">
+				<h4 class="buttons">
 					<a href="/blog">Blog</a>
 					<a href="/projects">Projects</a>
 					<a href="/about">About</a>
-				</h3>
+				</h4>
 			</section>
 
 			<section id="projects">