diff --git a/theme/boost/scss/moodle/forms.scss b/theme/boost/scss/moodle/forms.scss
index e44cffbcaf6..56f9d223c32 100644
--- a/theme/boost/scss/moodle/forms.scss
+++ b/theme/boost/scss/moodle/forms.scss
@@ -10,7 +10,7 @@
 }
 
 .mform .containsadvancedelements .advanced.show {
-    display: block;
+    display: flex;
 }
 
 #adminsettings span.error {