W3Schools Tryit Editor

<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
<body>

<div class="w3-container">
  <h2>Filter Table</h2>
  <p>Search for a name in the input field.</p>

<table class="w3-table-all w3-margin-top" id="myTable">
    <tr>
      <th style="width:60%;">Name</th>
      <th style="width:40%;">Country</th>
    </tr>
    <tr>
      <td>Alfreds Futterkiste</td>
      <td>Germany</td>
    </tr>
    <tr>
      <td>Berglunds snabbkop</td>
      <td>Sweden</td>
    </tr>
    <tr>
      <td>Island Trading</td>
      <td>UK</td>
    </tr>
    <tr>
      <td>Koniglich Essen</td>
      <td>Germany</td>
    </tr>
    <tr>
      <td>Laughing Bacchus Winecellars</td>
      <td>Canada</td>
    </tr>
    <tr>
      <td>Magazzini Alimentari Riuniti</td>
      <td>Italy</td>
    </tr>
    <tr>
      <td>North/South</td>
      <td>UK</td>
    </tr>
    <tr>
      <td>Paris specialites</td>
      <td>France</td>
    </tr>
  </table>

<p><strong>Tip:</strong> Remove toUpperCase() if you want to perform a case-sensitive search.</p>
  <p>Change tr[i].getElementsByTagName('td')[0] to [1] if you want to search for "Country" (index 1) instead of "Name" (index 0).</p>
</div>

</body>
</html>