diff --git a/about_marker.html b/about_marker.html
index 7fa246e..72276fb 100644
--- a/about_marker.html
+++ b/about_marker.html
@@ -30,7 +30,7 @@
 <tr><td class="c"><img src="./icon/sawa.png" alt="masuda1_dousya.jpg" width="60" height="100"><br>水色</td><td>沢</td></tr>
 <tr><td class="c"><img src="./icon/sai.png" alt="masuda1_dousya.jpg" width="60" height="100"><br>黄緑</td><td>生活用水</td></tr>
 </table>
-<h2>破線は蓋の無い水路です</h2>
+<p><em>破線は蓋の無い水路です</em></p>
 <buttom><a href="./map.html">マップに戻る</a></buttom>
 </body>
 </html>