这样写规范吗
<body>
<table border="1">
<caption>前端三剑客</caption>
<tr>
<th>知识点</th>
<th>重要程度</th>
<th>难度</th>
<th>学习周期</th>
</tr>
<tr>
<td>html</td>
<td>5星</td>
<td>4星</td>
<td>10天</td>
</tr>
<tr>
<td>css</td>
<td>5星</td>
<td>4星</td>
<td>10天</td>
</tr>
<tr>
<td>js</td>
<td>5星</td>
<td>5星</td>
<td>20天</td>
</tr>
</table>
</body>
