JSFiddle - React, Tailwind, and code Playground

HTML

<table class='main'>
    <tr class='parent' title="-">
      <td>1</td><td>2</td><td>3</td>
      <td class='child'>
        <table>
            <tr><td>Test</td></tr>
        </table>
      </td>
    </tr>
</table>

CSS

.child {
  position:absolute;
  bottom:0;
}
.parent {
  position:relative;
}
/*
.main {
  position:relative;
}
*/