rowspan으로 합친 table에서 룰오버
tbody:hover td, tbody:hover th {background:#eff5f7;/* color:#000; */ }
row를 <tbody>로 감싼다
<table>
<tbody>
<tr>
<td rowspan="3"></td>
<td>a</td>
<td></td>
<td></td>
<td rowspan="3"></td>
</tr>
<tr>
<td>b</td>
<td></td>
<td></td>
</tr>
<tr>
<td>c</td>
<td></td>
<td></td>
</tr>
</tbody>
<tbody>
<tr>
<td rowspan="3"></td>
<td>a</td>
<td></td>
<td></td>
<td rowspan="3"></td>
</tr>
<tr>
<td>b</td>
<td></td>
<td></td>
</tr>
<tr>
<td>c</td>
<td></td>
<td></td>
</tr>
</tbody>
</table>
