diff --git a/addons/web/static/src/views/onboarding_banner.js b/addons/web/static/src/views/onboarding_banner.js
index 1fabfd39de3..11acd5eab16 100644
--- a/addons/web/static/src/views/onboarding_banner.js
+++ b/addons/web/static/src/views/onboarding_banner.js
@@ -48,5 +48,5 @@ export class OnboardingBanner extends owl.Component {
     }
 }
 
-OnboardingBanner.template = owl.tags.xml`<div t-raw="bannerHTML" />`;
+OnboardingBanner.template = owl.tags.xml`<div class="w-100" t-raw="bannerHTML" />`;
 OnboardingBanner.props = {};