JSFiddle - React, Tailwind, and code Playground

HTML

<table border="1">
  <tr>
    <th>Month</th>
    <th>Savings</th>
  </tr>
  <tr>
    <td>January</td>
    <td>$100</td>
  </tr>
  <tr>
    <td>February</td>
    <td>$80</td>
  </tr>
</table>

CSS

tr:nth-child(odd) {
   background: green;
}
tr:nth-child(even) {
    background: red;
}