Make even smaller

src/App.svelte

@@ -35,4 +35,4 @@
   </div>
 </section>
 
-<Footer />
+<Footer />

src/app.scss

@@ -7,7 +7,7 @@
   }
 }
 
-.app {
+#app {
   display: flex;
   flex-direction: column;
   flex-grow: 1;