JSFiddle - React, Tailwind, and code Playground

HTML

<table>
 <thead>
    <th>aaa</th>
    <th>bbb</th>
    <th class="masked">ccc</th>
 </thead>
 <tbody>
    <tr>
        <td>a1</td>
        <td>b1</td>
        <td>c1</td>
    </tr>
    <tr>
        <td>a2</td>
        <td>b2</td>
        <td>c2</td>
    </tr>
    <tr>
        <td>a3</td>
        <td>b3</td>
        <td>c3</td>
    </tr>
 </tbody>

CSS

.masked 
{
    display : none;
}
td:nth-child(3){ display : none;}