JSFiddle - React, Tailwind, and code Playground

HTML

<table class="redtable">
  <tr class="odd"><td>row</td><td>1</td></tr>
  <tr><td>row</td><td>2</td></tr>
  <tr class="odd"><td>row</td><td>3</td></tr>
</table>

<table class="yellowtable">
  <tr class="odd"><td>row</td><td>1</td></tr>
  <tr><td>row</td><td>2</td></tr>
  <tr class="odd"><td>row</td><td>3</td></tr>
</table>

CSS

.redtable.odd {background-color:red;}
.yellowtable.odd {background-color: yellow;}