JSFiddle - React, Tailwind, and code Playground

HTML

<table>
  <tr>
    <th>id</th>
    <th>name</th>
  </tr>
  <tr>
    <td>1</td>
    <td>classes</td>
  </tr>
  <tr>
    <td>2</td>
    <td>sync</td>
  </tr>
</table>

CSS

table tr:first-child {
  background: grey;
}

table tr {
  display: block;
  border: 1px solid grey;
}