<!DOCTYPE html>
<html>
  <head>
    <style>
      td {
        border: 1px solid black;
      }

      table {
        border-collapse: collapse;
      }

      th,
      td {
        border: 1px solid black;
      }

    </style>
  </head>
  <body>
    <h3>Table with Columnized Cell Header(th) which is colspanned to 2 cells</h3>
    <table>
      <tr>
        <th>Header 1</th>
        <th>Header 2</th>
        <th>Header 3</th>
      </tr>
      <tr>
        <td>Cell 1 Lorem ipsum dolor sit amet, consectet