diff --git a/agaric/css/agaric.css b/agaric/css/agaric.css
index 9a3636d..07a7141 100644
--- a/agaric/css/agaric.css
+++ b/agaric/css/agaric.css
@@ -7244,10 +7244,13 @@ iframe {
       margin-left: calc(50% - 50vw + 0.5em);
       margin-right: calc(50% - 50vw + 0.5em); } }
   .flow [class^=flow] {
-    box-sizing: border-box; }
+    box-sizing: border-box;
+    margin-top: 1rem;
+    margin-bottom: 1rem; }
     @media screen and (min-width: 769px), print {
       .flow [class^=flow] {
-        margin: 1.5rem; } }
+        margin-left: 1.5rem;
+        margin-right: 1.5rem; } }
     .flow [class^=flow] + [class^=flow] h2:first-child {
       margin-top: 1.1428em; }
   @media screen and (min-width: 769px), print {