JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  <table>
    <thead>
      <tr>
        <th></th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
        <th>head</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <th>head</th>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
        <td>body</td>
...

SCSS

div {
  max-width: 40em;
  max-height: 20em;
  overflow: scroll;
  position: relative;
}

table {
  position: relative;
  border-collapse: collapse;
}

td,
th {
  padding: 0.25em;
}

thead th {
  position: -webkit-sticky; /* for Safari */
  position: sticky;
  top: 0;
  background: #000;
  color: #FFF;
}

thead th:first-child {
  left: 0;
  z-index: 1;
}

tbody th {
  position: -webkit-sticky; /* for Safari */
  position: sticky;
  left: 0;
  background: #FFF;
  border-right: 1px solid #CCC;
}