diff --git a/posimai-dev/index.html b/posimai-dev/index.html
index b1aec9a5..8be60cad 100644
--- a/posimai-dev/index.html
+++ b/posimai-dev/index.html
@@ -143,14 +143,11 @@
     </div>
     <div class="settings-panel-body">
         <div>
-            <div class="settings-group-label">外観</div>
-            <div class="settings-item">
-                <div class="settings-item-label">テーマ</div>
-                <div class="theme-selector">
-                    <button class="theme-btn" data-theme-val="dark"><i data-lucide="moon" style="width:12px;height:12px;stroke-width:1.75"></i>ダーク</button>
-                    <button class="theme-btn" data-theme-val="light"><i data-lucide="sun" style="width:12px;height:12px;stroke-width:1.75"></i>ライト</button>
-                    <button class="theme-btn" data-theme-val="system"><i data-lucide="monitor" style="width:12px;height:12px;stroke-width:1.75"></i>自動</button>
-                </div>
+            <div class="settings-group-label">テーマ</div>
+            <div class="theme-selector">
+                <button class="theme-btn" data-theme-val="dark"><i data-lucide="moon" style="width:12px;height:12px;stroke-width:1.75"></i>ダーク</button>
+                <button class="theme-btn" data-theme-val="light"><i data-lucide="sun" style="width:12px;height:12px;stroke-width:1.75"></i>ライト</button>
+                <button class="theme-btn" data-theme-val="system"><i data-lucide="monitor" style="width:12px;height:12px;stroke-width:1.75"></i>自動</button>
             </div>
         </div>
     </div>