HTML thead char 属性

<table border="1" 
	width="100%">
       
      <thead align="char" char="M">
       
       
      <tr>
           
      <th>Month</th>
            <th>Savings</th>
       
       
      </tr>
       
      </thead>
          <tr>
            <td>January</td>
       
         
      <td>$100</td>
          </tr>
          <tr>
            <td>February</td>
            <td>$80</td>
       
       
      </tr>
      </table>