How to add Vertical header to the table

Question

I am trying to add one full width table header vertically, on the left side of the table as shown in image. But, I could not get how to do that.

So far, I could find only to add th in each row, however, I was not searching for that.

My html code:

 <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet"/> <table class="table"> <thead> <tr> <th colspan="4" style="text-align:center"> Horizontal Header </th> </tr> <tr> <th scope="col">#</th> <th scope="col">First</th> <th scope="col">Last</th> <th scope="col">Handle</th> </tr> </thead> <tbody> <tr> <th scope="row">1</th> <td>Mark</td> <td>Otto</td> <td>@mdo</td> </tr> <tr> <th scope="row">2</th> <td>Jacob</td> <td>Thornton</td> <td>@fat</td> </tr> <tr> <th scope="row">3</th> <td>Larry</td> <td>the Bird</td> <td>@twitter</td> </tr> </tbody> </table> 

However, I am looking to add vertical header as shown in image below:

Answer 1

 <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet"/> <table class="table"> <thead> <tr> <th colspan="4" style="text-align:center"> Horizontal Header </th> </tr> <tr> <th scope="col"></th> <th scope="col">#</th> <th scope="col">First</th> <th scope="col">Last</th> <th scope="col">Handle</th> </tr> </thead> <tbody> <tr> <th rowspan="3"><span style=" position: absolute; transform: rotate(-90deg); top: 159px; left: -22px;">Vertical Header</span></th> <th scope="row">1</th> <td>Mark</td> <td>Otto</td> <td>@mdo</td> </tr> <tr> <th scope="row">2</th> <td>Jacob</td> <td>Thornton</td> <td>@fat</td> </tr> <tr> <th scope="row">3</th> <td>Larry</td> <td>the Bird</td> <td>@twitter</td> </tr> </tbody> </table>