Fix single metadata bottom margins

layouts/partials/paige/metadata.html

@@ -52,12 +52,14 @@
         </p>
     {{ end }}
 
+    {{ if or $authors $date $readingtime }}
+        <div class="mb-3">
             {{ with $authors }}
-        <p class="{{ if or $date $readingtime }} {{ $nogap }} {{ end }} paige-authors text-center text-secondary">{{ . }}</p>
+                <p class="mb-0 paige-authors text-center text-secondary">{{ . }}</p>
             {{ end }}
 
             {{ with $date }}
-        <p class="{{ if $readingtime }} {{ $nogap }} {{ end }} paige-date text-center text-secondary">
+                <p class="mb-0 paige-date text-center text-secondary">
                     {{ with $commiturl }}
                         <a class="link-secondary text-decoration-none" href="{{ . }}">
                     {{ end }}
@@ -71,6 +73,8 @@
             {{ end }}
 
             {{ with $readingtime }}
-        <p class="paige-reading-time text-center text-secondary">{{ . }} {{ i18n "paige_minutes" . }}</p>
+                <p class="mb-0 paige-reading-time text-center text-secondary">{{ . }} {{ i18n "paige_minutes" . }}</p>
+            {{ end }}
+        </div>
     {{ end }}
 </section>