set up initial styling and structure

src/routes/_layout.svelte

@@ -1,22 +1,25 @@
 <script>
 	import Nav from '../components/Nav.svelte';
-
+	import Footer from '../components/Footer.svelte';
 	export let segment;
 </script>
 
 <style>
 	main {
 		position: relative;
-		max-width: 56em;
-		background-color: white;
+		max-width: 60em;
+		background-color: #252526 !important;
 		padding: 2em;
 		margin: 0 auto;
 		box-sizing: border-box;
+		margin-top: 1em;
 	}
 </style>
 
-<Nav {segment}/>
+<Nav {segment}></Nav>
 
-<main>
+<main class="shadow p-3 mb-5 bg-white rounded">
 	<slot></slot>
-</main>
+</main>
+
+<Footer></Footer>