major reformating

_includes/past-events.html

@@ -1,4 +1,4 @@
-  <h2>Förflutna events</h2>
+  <h3>Förflutna events</h3>
 
   {% capture now -%}{{ site.time | date: '%s' }}{%- endcapture %}
   {% for event in site.events %}
@@ -11,10 +11,10 @@
 
   {% if now >= endtime %}
   <br />
-  <h3>
+  <h4>
     <a href="{{ event.url }}" class="cta">{{ event.event_data.start_datetime | date: '%Y-%m-%d' }}</a>
-  </h3>
-  <h3>{{ event.title }}</h3>
+  </h4>
+  <h4>{{ event.title }}</h4>
   <br />
   <hr />
   <br />