COL ELEMENT EXAMPLE
Run 
<!doctype html>
<html>
    <head>
        <title>
            Example of col element.
        </title>
    </head>
    <body>
        <table>
            <colgroup>
                <col style="background-color:green" />
                <col style="background-color:orange" />
                <col style="background-color:red" />
                <col style="background-color:lightblue" />
            </colgroup>
            <tr>
                <th>Emp Id</th>
                <th>Emp name</th>
                <th>DOB</th>
                <th>Address</th>
            </tr>
            <tr>
                <td>001</td>
                <td>Palak</td>
                <td>08-09-1985</td>
                <td>11, Adarsh Nagar</td>
               
            </tr>
            <tr>
                <td>002</td>
                <td>Preet</td>
                <td>08-10-1984</td>
                <td>23,New Delhi</td>
               
            </tr>
            <tr>
                <td>003</td>
                <td>Tilak</td>
                <td>22-05-1992</td>
                <td>Noida Sec-62</td>
               
            </tr>
        </table>
    </body>
</html>