diff --git a/photo21/templates/account/login.html b/photo21/templates/account/login.html
index 02422ce..5e2af59 100644
--- a/photo21/templates/account/login.html
+++ b/photo21/templates/account/login.html
@@ -6,7 +6,7 @@ SPDX-License-Identifier: GPL-2.0-or-later
 {% block head_title %}{% trans "Sign In" %}{% endblock %}
 
 {% block content %}
-<div class="card bg-light mx-auto" style="max-width: 35rem;">
+<div class="card mx-auto" style="max-width: 35rem;">
     <h3 class="card-header text-center">
         {% trans "Sign In" %}
     </h3>
diff --git a/photo21/templates/account/signup.html b/photo21/templates/account/signup.html
index 16df347..380b639 100644
--- a/photo21/templates/account/signup.html
+++ b/photo21/templates/account/signup.html
@@ -6,7 +6,7 @@ SPDX-License-Identifier: GPL-2.0-or-later
 {% block head_title %}{% trans "Signup" %}{% endblock %}
 
 {% block content %}
-<div class="card bg-light">
+<div class="card">
     <h3 class="card-header text-center">
         {% trans "Sign Up" %}
     </h3>