html(3) tag(2)

(1) ol ordered label (double label)

<!--标签里面的每一行用<li>标签-->
	<ol>
        <li>第一个</li>
        <li>第二个</li>
        <li>第三个</li>
    </ol>

(2) ul unordered label (double label)

<ul>
     <li>第一个</li>
     <li>第二个</li>
     <li>第三个</li>
</ul>

(3) table table label (double label)
tr label (double label) can be nested in the table label, tr represents each row in the table, th represents the header in the table, td represents the column in the table to
collapse The edges of the table are merged, and the border in the style attribute can change the width, style and color of the border.

<table style="border:1px solid greenyellow;border-collapse:collapse">
        <tr>
            <th style="border:1px solid greenyellow">name</th>
            <th style="border:1px solid greenyellow">age</th>
        </tr>
        <tr>
            <td style="border:1px solid greenyellow">python</td>
            <td style="border:1px solid greenyellow">22</td> 
        </tr>
    </table>