diff --git a/koki/quizsub.html b/koki/quizsub.html
index f98f9f2..dd02419 100644
--- a/koki/quizsub.html
+++ b/koki/quizsub.html
@@ -10,7 +10,7 @@
 <hr>
 <h2>問題</h2>
 <div id="text_q"></div>
-<p>?</p>
+<p class='toi'>?</p>
 <h2>解答</h2>
 <div id="text_a"></div>
 <details>