JSFiddle - React, Tailwind, and code Playground

HTML

<table>
  <thead>
    <tr>
      <th>AColumnLongWord</th>
      <th>AColumnLongWord</th>
      <th>AColumnLongWord</th>
      <th>AColumnLongWord</th>
      <th>AColumnLongWord</th>
    </tr>
  </thead>
</table>

CSS

table { width:100%; }
th {
  overflow:hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width:0;
}