diff --git a/doc/_themes/odoodoc/static/style.css b/doc/_themes/odoodoc/static/style.css
index 079d7a3b4b1..36b50ffa2d5 100644
--- a/doc/_themes/odoodoc/static/style.css
+++ b/doc/_themes/odoodoc/static/style.css
@@ -7226,9 +7226,12 @@ td.field-body > ul {
   .stripe .section:not(.force-right) > [class*=highlight-] .highlight .il {
     color: #2aa198;
   }
-  .stripe .body > .section > .section {
+  .stripe .body > .section .section {
     border-top: 1px solid #eeeeee;
   }
+  .stripe .body > .section h1 + .section {
+    border-top: none;
+  }
   .stripe .section:not(.force-right) > h1,
   .stripe .section:not(.force-right) > h2,
   .stripe .section:not(.force-right) > h3,
diff --git a/doc/_themes/odoodoc/static/style.less b/doc/_themes/odoodoc/static/style.less
index 376b422006a..9d693d5624a 100644
--- a/doc/_themes/odoodoc/static/style.less
+++ b/doc/_themes/odoodoc/static/style.less
@@ -738,8 +738,15 @@ td.field-body {
       }
     }
     // separator above H2
-    .body > .section > .section {
-      border-top: 1px solid @color-right;
+    .body > .section > {
+      .section {
+        border-top: 1px solid @color-right;
+      }
+      // but not if subsection directly follows an h1 (no introductory
+      // document paragraph)
+      h1 + .section {
+        border-top: none;
+      }
     }
     .section:not(.force-right) > h1, .section:not(.force-right) > h2,
     .section:not(.force-right) > h3, .section:not(.force-right) > h4,