Remove unnecessary nesting level on single.html

layouts/_default/single.html

@@ -1,7 +1,6 @@
 {{ define "main" }}
-<main>
-	<article class="single">
-		<div class="container">
+	<main class="single">
+		<article class="container">
 			<div class="columns">
 				<div class="column is-8 is-offset-2">
 					<h1>{{ .Render "frag/title" }}</h1>
@@ -19,7 +18,6 @@
 				</div>
 			</div>
 			{{ partial "comments" . }}
-		</div>
-	</article>
-</main>
+		</article>
+	</main>
 {{ end }}