diff --git a/kadai.html b/kadai.html
index b6cc4ef..8c9e5f5 100644
--- a/kadai.html
+++ b/kadai.html
@@ -24,12 +24,16 @@
 <th class="sat">土</th>
 </tr>  
 <tr><td> .</td><td>.</td><td>.</td><td>.</td><td>.</td>
-<td>1</td><td>2</td><td></td></tr>
-<tr><td>3</td><td>4</td><td>5</td><td>6</td><td>7</td><td>8</td><td>9</td><td></td></tr>
-<tr><td>10</td><td>11</td><td>12</td><td>13</td><td>14</td><td>15</td><td>16</td><td></td></tr>
-<tr><td>17</td><td>18</td><td>19</td><td>20</td><td>21</td><td>22</td><td>23</td><td></td></tr>
-<tr><td>24</td><td>25</td><td>26</td><td>27</td><td>28</td><td>29</td><td>30</td><td></td></tr>
-<tr><td>31</td></tr>          
+<td>1</td><td class="b1">2</td><td></td></tr>
+<tr><td class="r1">3</td><td class="r1">4</td><td class="r1">5</td>
+<td class="r1">6</td><td>7</td><td>8</td><td class="b1">9</td><td></td></tr>
+<tr><td class="r1">10</td><td>11</td><td>12</td><td>13</td><td>14</td><td>15</td>
+<td class="b1">16</td><td></td></tr>
+<tr><td class="r1">17</td><td>18</td><td>19</td><td>20</td><td>21</td><td>22</td>
+<td class="b1">23</td><td></td></tr>
+<tr><td class="r1">24</td><td>25</td><td>26</td><td>27</td><td>28</td><td>29</td>
+<td class="b1">30</td><td></td></tr>
+<tr><td class="r1">31</td></tr>          
 </table>