JSFiddle - React, Tailwind, and code Playground

HTML

<table id="tabl" border = 1>
    <tr>
      <td>UNO</td>
      <td>DOS</td>
      <td>TRES</td>
      <td>CUATRO</td>
    </tr>
    
    <tr>
      <td>UNO</td>
      <td>DOS</td>
      <td>TRES</td>
      <td>CUATRO</td>
    </tr>
    
    <tr>
      <td>UNO</td>
      <td>DOS</td>
      <td>TRES</td>
      <td>CUATRO</td>
    </tr>
  </table>

CSS

#tabl tr{
    background:#FFFFFF;
}
#tabl tr:hover{
    background:#B9F8F8;
}