JSFiddle - React, Tailwind, and code Playground

HTML

<div class="overlay">
    <div class="table-container">
        <table>
            <thead>
                <th>
                    <td>head1</td>
                    <td>Head2</td>
                </th>
            </thead>
        </table>
        <div class="test">
            <table>
                <tbody>
                    <tr>
                        <td>1</td>
                        <td>2</td>
                    </tr>
                    <tr>
                        <td>1</td>
                        <td>2</td>
                    </tr>
                    <tr>
                        <td>1</td>
                        <td>2</td>
                    </tr>
                    <tr>
                        <td>1</td>
                        <td>2</td>
                    </tr>
                    <tr>
                        <td>1</td>
                        <td>2</td>
                    </tr>
                    <tr>
                        <td>1</td>
                        <td>2</td>
                    </tr>
                    <tr>
                        <td>1</td>
                        <td>2</td>
                    </tr>
                    <tr>
                        <td>1</td>
                        <td>2</td>
                    </tr>
                    <tr>
                        <td>1</td>
                        <td>2</td>
                    </tr>
                    <tr>
                        <td>1</td>
                        <td>2</td>
                    </tr>
                    <tr>
                        <td>1</td>
                        <td>2</td>
                    </tr>
                    <tr>
                        <td>1</td>
                        <td>2</td>
                    </tr>
                    <tr>
                        <td>1</td>
                        <td>2</td>
                    </tr>
                    <tr>
                        <td>1</td>
                        <td>2</td>
               ...

CSS

.overlay {
    position: absolute;
    border: 1px solid red;
    width: 90%;
}

table {
    table-layout: fixed;
}
.test {
    height: 100%;
    max-height: 200px;
    overflow: auto;
}