diff --git a/app/templates/settings.html b/app/templates/settings.html
index adf38a8..2f40110 100644
--- a/app/templates/settings.html
+++ b/app/templates/settings.html
@@ -12,7 +12,8 @@
 <div class="alert alert-error">{{ error }}</div>
 {% endif %}
 
-<div class="form-card" style="max-width:400px">
+<div style="max-width:400px;margin:0 auto">
+<div class="form-card">
     <h3 style="margin-bottom:.75rem">修改用户名</h3>
     <form method="post" action="/settings/change-username">
         <label>当前用户名</label>
@@ -25,7 +26,7 @@
     </form>
 </div>
 
-<div class="form-card" style="max-width:400px;margin-top:1.5rem">
+<div class="form-card" style="margin-top:1.5rem">
     <h3 style="margin-bottom:.75rem">修改密码</h3>
     <form method="post" action="/settings/change-password">
         <label>当前密码</label>
@@ -39,4 +40,5 @@
         </div>
     </form>
 </div>
+</div>
 {% endblock %}