diff --git a/theme/boost/style/moodle.css b/theme/boost/style/moodle.css
index f38aa872b28..3823b1e70aa 100644
--- a/theme/boost/style/moodle.css
+++ b/theme/boost/style/moodle.css
@@ -7109,7 +7109,9 @@ button.bg-dark:focus {
   display: table-cell !important; }
 
 .d-flex {
-  display: flex !important; }
+  display: flex !important;
+  max-width: fit-content;
+}
 
 .d-inline-flex {
   display: inline-flex !important; }
diff --git a/theme/classic/style/moodle.css b/theme/classic/style/moodle.css
index cb187d05d0d..86b58c844e8 100644
--- a/theme/classic/style/moodle.css
+++ b/theme/classic/style/moodle.css
@@ -7320,7 +7320,9 @@ button.bg-dark:focus {
   display: table-cell !important; }
 
 .d-flex {
-  display: flex !important; }
+  display: flex !important;
+  max-width: fit-content;
+}
 
 .d-inline-flex {
   display: inline-flex !important; }