diff --git a/templates/drawers.mustache b/templates/drawers.mustache
index bb756ba..674eddf 100644
--- a/templates/drawers.mustache
+++ b/templates/drawers.mustache
@@ -109,7 +109,7 @@
                         </div>
                     {{/courseindex}}
                     {{#hasblocks}}
-                        <div class="drawer-toggler drawer-right-toggle ml-auto d-print-none">
+                        <div class="drawer-toggler drawer-right-toggle ms-auto d-print-none">
                             <button
                                 class="btn icon-no-margin"
                                 data-toggler="drawers"
diff --git a/templates/frontpage.mustache b/templates/frontpage.mustache
index 35f2089..8cee8a0 100644
--- a/templates/frontpage.mustache
+++ b/templates/frontpage.mustache
@@ -108,7 +108,7 @@
                         </div>
                     {{/courseindex}}
                     {{#hasblocks}}
-                        <div class="drawer-toggler drawer-right-toggle ml-auto d-print-none">
+                        <div class="drawer-toggler drawer-right-toggle ms-auto d-print-none">
                             <button
                                 class="btn icon-no-margin"
                                 data-toggler="drawers"
diff --git a/templates/navbar.mustache b/templates/navbar.mustache
index ead1928..3ccc6aa 100644
--- a/templates/navbar.mustache
+++ b/templates/navbar.mustache
@@ -107,7 +107,7 @@
                 </ul>
             {{/themestyleheader}}
 
-        <div id="usernavigation" class="navbar-nav ml-auto">
+        <div id="usernavigation" class="navbar-nav ms-auto">
             {{#langmenu}}
                 {{> theme_boost/language_menu }}
             {{/langmenu}}