diff --git a/addons/portal/static/src/scss/portal.scss b/addons/portal/static/src/scss/portal.scss
index 27460705627..0e39035b624 100644
--- a/addons/portal/static/src/scss/portal.scss
+++ b/addons/portal/static/src/scss/portal.scss
@@ -17,8 +17,7 @@ $-navbar-height: $nav-link-height !default;
     display: flex;
     flex-flow: column nowrap;
     width: 100%;
-    height: 100%;
-    overflow: auto;
+    min-height: 100%;
 
     > * {
         flex: 0 0 auto;