diff --git a/mod/quiz/classes/output/renderer.php b/mod/quiz/classes/output/renderer.php
index 55ab2d4b6cf..584246c26d5 100644
--- a/mod/quiz/classes/output/renderer.php
+++ b/mod/quiz/classes/output/renderer.php
@@ -534,7 +534,7 @@ class renderer extends plugin_renderer_base {
      */
     public function during_attempt_tertiary_nav($quizviewurl): string {
         $output = '';
-        $output .= html_writer::start_div('container-fluid tertiary-navigation');
+        $output .= html_writer::start_div('tertiary-navigation');
         $output .= html_writer::start_div('row');
         $output .= html_writer::start_div('navitem');
         $output .= html_writer::link($quizviewurl, get_string('back'),
@@ -933,7 +933,7 @@ class renderer extends plugin_renderer_base {
         }
 
         if ($content) {
-            return html_writer::div(html_writer::div($content, 'row'), 'container-fluid tertiary-navigation');
+            return html_writer::div(html_writer::div($content, 'd-flex'), 'tertiary-navigation');
         } else {
             return '';
         }
diff --git a/mod/quiz/templates/edit_nav_actions.mustache b/mod/quiz/templates/edit_nav_actions.mustache
index 123e953ec3b..141e285af5a 100644
--- a/mod/quiz/templates/edit_nav_actions.mustache
+++ b/mod/quiz/templates/edit_nav_actions.mustache
@@ -48,7 +48,7 @@
         }
     }
 }}
-<div class="container-fluid tertiary-navigation">
+<div class="tertiary-navigation">
     <div class="d-flex">
         {{#navmenu}}
             <div class="navitem">
diff --git a/mod/quiz/templates/overrides_actions.mustache b/mod/quiz/templates/overrides_actions.mustache
index d56b4272f8b..e44c1b21aaa 100644
--- a/mod/quiz/templates/overrides_actions.mustache
+++ b/mod/quiz/templates/overrides_actions.mustache
@@ -69,7 +69,7 @@
         }
     }
 }}
-<div class="container-fluid tertiary-navigation">
+<div class="tertiary-navigation">
     <div class="d-flex">
         {{#overridesnav}}
             <div class="navitem">