JSFiddle - React, Tailwind, and code Playground

HTML

<table id="the-table">
    <thead>
        <tr>
            <th class="domain-col">Name</th>
            <th>Size</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
            <td>Joe</td>
            <td>40</td>
        </tr>
        <tr>
  ...

CSS

th {
    background-color:red;
}
#the-table {
    width: 100%;
}

JavaScript

var topPos;

    function AncorControlMatches() {
        topPos = Math.max(0, $("#the-table").offset().top - $(this).scrollTop());
        if (topPos == 0) {
            $("#the-table thead tr").css("top", topPos);
            $("#the-table thead tr").css("position", "fixed");
        } else {
            $("#the-table thead tr").removeAttr("style");
        }
    }


    $(window).scroll(function () {
        AncorControlMatches();
    });

    $(document).ready(function () {
        setTimeout(function () {
            AncorControlMatches();
            $(window).trigger('resize');
        }, 300);
    });