single page fixes

src/pages/_layouts/single.html

@@ -5,8 +5,8 @@ body-class: border-top-wide border-primary d-flex flex-column
 
 <div class="flex-fill d-flex flex-column justify-content-center">
 	<div class="container-{{ page.container-size | default: 'tight' }} py-6">
-		<div class="text-center mb-4">
-			<img src="{{ site.base }}/static/logo.svg" height="36" alt="">
+		<div class="text-center mb-5">
+			<a href="{{ site.base }}"><img src="{{ site.base }}/static/logo.svg" height="36" alt=""></a>
 		</div>
 
 		{{ content }}