Increase margin

source/talks.html.twig

@@ -34,11 +34,11 @@ talks:
         date: '2019-01-28'
 ---
 {% block content %}
-    <div class="markup mb-6">
+    <div class="markup mb-8">
         <p>I regularly speak at conferences and user groups about a range of subjects including PHP, Drupal, automated testing, Git and systems administration.</p>
     </div>
 
-    <div class="mb-6">
+    <div class="mb-8">
         <h2 class="mb-2">Upcoming Talks</h2>
 
         {% set upcoming_talks = getUpcomingTalks(data.talks|merge(page.talks), site.events) %}