diff --git a/addons/web/static/src/legacy/scss/base_frontend.scss b/addons/web/static/src/legacy/scss/base_frontend.scss
index c300b3db38e..befd34db1d2 100644
--- a/addons/web/static/src/legacy/scss/base_frontend.scss
+++ b/addons/web/static/src/legacy/scss/base_frontend.scss
@@ -1,5 +1,5 @@
 // Frontend general
-html, body, #wrapwrap {
+html:not(:has(.o_in_iframe)), body:not(.o_in_iframe), #wrapwrap {
     width: 100%;
     height: 100%;
     overflow: hidden;