diff --git a/commentaries/factories.py b/commentaries/factories.py
index 940e958cb31ba3d2039c0e44c8ce1f58640930df..85961e640df59ae58a23bf099b0c2a411c0481db 100644
--- a/commentaries/factories.py
+++ b/commentaries/factories.py
@@ -39,10 +39,10 @@ class CommentaryFactory(factory.django.DjangoModelFactory):
     def add_authors(self, create, extracted, **kwargs):
         contributors = list(Contributor.objects.order_by('?')
                             .exclude(pk=self.requested_by.pk).all()[:4])
-        for contrib in contributors:
-            self.author_list += ', %s %s' % (contrib.user.first_name, contrib.user.last_name)
-            if create:
-                self.authors.add(contrib)
+        self.author_list = ', '.join(
+            ['%s %s' % (contrib.user.first_name,
+                        contrib.user.last_name) for contrib in contributors])
+        self.authors.add(*contributors)
 
 
 class VettedCommentaryFactory(CommentaryFactory):
diff --git a/commentaries/templates/commentaries/howto.html b/commentaries/templates/commentaries/howto.html
index e954e8030089b4d8a16a22868ad0e2da6d322aaa..eb2cc763336eefd9d600790b906b19dc3f2249b5 100644
--- a/commentaries/templates/commentaries/howto.html
+++ b/commentaries/templates/commentaries/howto.html
@@ -6,25 +6,27 @@
   <script type="text/javascript" async src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-MML-AM_CHTML"></script>
 {% endblock headsup %}
 
-{% block bodysup %}
-
-
-<section>
-  <hr class="hr12">
-  <h1>SciPost Commentaries how-to</h1>
-  <h3>Activation procedure</h3>
-  <p>A Commentary Page can be requested by any registered SciPost Contributor for any published scientific paper or arXiv preprint by filling the <a href="{% url 'commentaries:request_commentary' %}">Commentary request form</a>. After vetting by an Editor, the Commentary Page is activated and made open for Comments from registered SciPost Contributors. Authors can reply to Comments, and Contributors can add Comments to the chain.</p>
-  <ul>
-    <li><a href="{% url 'commentaries:request_commentary' %}">Request opening a SciPost Commentary Page</a></li>
-  </ul>
-  
-  <br/>
-  <h3>Standardized URLs</h3>
-  <p>In order to facilitate localization of commentaries on particular publications, within SciPost, all Commentary Pages have a standardized URL of the form</p>
-  <p>https://scipost.org/commentary/IDENTIFIER</p>
-  <p>where IDENTIFIER is either the (by definition unique and stable) DOI of the published paper, or the arXiv identifier in new (arXiv:####.#####v#) or old (cond-mat/#######v#) style. NOTE: for arXiv, we systematically require the presence of the version number in order to avoid confusion (and yes, we do so even if there exists only one version).</p>
-
-</section>
-
-
-{% endblock bodysup %}
+{% block content %}
+
+<div class="row">
+    <div class="col-12">
+        <h1 class="highlight">SciPost Commentaries how-to</h1>
+    </div>
+</div>
+<div class="row">
+    <div class="col-12">
+        <h2>Activation procedure</h2>
+          <p>A Commentary Page can be requested by any registered SciPost Contributor for any published scientific paper or arXiv preprint by filling the <a href="{% url 'commentaries:request_commentary' %}">Commentary request form</a>. After vetting by an Editor, the Commentary Page is activated and made open for Comments from registered SciPost Contributors. Authors can reply to Comments, and Contributors can add Comments to the chain.</p>
+          <ul>
+            <li><a href="{% url 'commentaries:request_commentary' %}">Request opening a SciPost Commentary Page</a></li>
+          </ul>
+
+          <br/>
+          <h3>Standardized URLs</h3>
+          <p>In order to facilitate localization of commentaries on particular publications, within SciPost, all Commentary Pages have a standardized URL of the form</p>
+          <p class="text-blue">https://scipost.org/commentary/IDENTIFIER</p>
+          <p>where IDENTIFIER is either the (by definition unique and stable) DOI of the published paper, or the arXiv identifier in new (arXiv:####.#####v#) or old (cond-mat/#######v#) style. NOTE: for arXiv, we systematically require the presence of the version number in order to avoid confusion (and yes, we do so even if there exists only one version).</p>
+    </div>
+</div>
+
+{% endblock %}