diff --git a/extensions/odoo_theme/static/scss/_mixins.scss b/extensions/odoo_theme/static/scss/_mixins.scss
index 27862fb89..fce6a5b53 100644
--- a/extensions/odoo_theme/static/scss/_mixins.scss
+++ b/extensions/odoo_theme/static/scss/_mixins.scss
@@ -91,3 +91,11 @@
                 @include o-transition(all, .5s, ease-in, 5s);
         }
 }
+
+@mixin o-content-tab-selected {
+    font-weight: 700;
+    background: $doc-paper;
+    border-bottom: 1px solid $doc-paper;
+    border-left: 1px solid $gray-light;
+    border-right: 1px solid $gray-light;
+}
diff --git a/extensions/odoo_theme/static/style.scss b/extensions/odoo_theme/static/style.scss
index 4a189b831..01709ca7f 100644
--- a/extensions/odoo_theme/static/style.scss
+++ b/extensions/odoo_theme/static/style.scss
@@ -1093,14 +1093,6 @@ header {
 // Content Tabs
 //------------------------------------------------------------------------------
 
-@mixin o-content-tab-selected {
-    font-weight: 700;
-    background: $doc-paper;
-    border-bottom: 1px solid $doc-paper;
-    border-left: 1px solid $gray-light;
-    border-right: 1px solid $gray-light;
-}
-
 .sphinx-tabs {
     padding: 0;
     margin-bottom: 1rem;