diff --git a/app/static/style.css b/app/static/style.css
index e182cd9..8c6bcdd 100644
--- a/app/static/style.css
+++ b/app/static/style.css
@@ -65,7 +65,7 @@ input[type="text"] + label, input[type="password"] + label, input[type="datetime
 .btn-primary:hover { background: var(--primary-hover); }
 .btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
 .btn-danger:hover { background: var(--danger-hover); }
-.btn-sm { padding: .25rem .6rem; font-size: .8rem; }
+.btn-sm { padding: .35rem .75rem; font-size: .85rem; height: 2rem; }
 
 /* Alert */
 .alert { padding: .75rem 1rem; border-radius: 6px; margin-bottom: 1rem; font-size: .9rem; }
diff --git a/app/templates/admin_invites.html b/app/templates/admin_invites.html
index b5fb1f2..d60d857 100644
--- a/app/templates/admin_invites.html
+++ b/app/templates/admin_invites.html
@@ -37,7 +37,7 @@
             <input type="datetime-local" name="expires_at" class="aif-input">
         </div>
         <div class="aif-row">
-            <button type="submit" class="btn btn-primary">创建</button>
+            <button type="submit" class="btn btn-primary" style="width:fit-content">创建</button>
         </div>
     </form>
 </div>