diff --git a/agaric/sass/agaric/_layout.flow.scss b/agaric/sass/agaric/_layout.flow.scss
index e6372ea..d44da4a 100644
--- a/agaric/sass/agaric/_layout.flow.scss
+++ b/agaric/sass/agaric/_layout.flow.scss
@@ -113,6 +113,6 @@
 // Adding this so the comment box at the bottom isn't unnaturally small.
 // Applying more generally breaks node content layout.
 
-.flow.content.comment-form {
+.media-comment > .flow.content {
   width: 100%;
 }
diff --git a/agaric/templates/field/field--comment.html.twig b/agaric/templates/field/field--comment.html.twig
index 9d07b0c..76754d7 100644
--- a/agaric/templates/field/field--comment.html.twig
+++ b/agaric/templates/field/field--comment.html.twig
@@ -56,7 +56,7 @@
 
   {% if comment_form %}
   <div class="media media-comment">
-    <div class="flow content comment-form">
+    <div class="flow content">
       <div class="flow_middle">
         <h3 class="subtitle" id="comment-form">{{ 'Add new comment'|t }}</h3>
         {{ comment_form }}