JSFiddle - React, Tailwind, and code Playground

HTML

<head/>
<body>
    <table style="width:100%">
        <tbody>
            <tr>
                <td colspan="3" style="width:66.7%">
                    <div id="TopSlidePane" runat="server" style="border:5px solid black;"/>
                </td>

                <td rowspan="3" style="width:33.3%;background-color:blue;height:100%;">
                    <div id="EventDiv" runat="server" style="border:5px solid black;height:100%;"/>
                </td>
            </tr>
            <tr>
                <td rowspan="2" style="background-color:purple;height:100%;">
                    <div id="PolDiv" runat="server" style="border:5px solid black;height:100%;"/>
                </td>

                <td rowspan="2" style="background-color:turquoise;height:100%;">
                    <div id="ResourceDiv" runat="server" style="border:5px solid black;height:100%;"/>
                </td>

                <td style="background-color:purple;">
                    <div id="TelDiv" runat="server" style="border:5px solid black;"/>
                </td>
            </tr>
            <tr>
                <td style="background-color:lime;">
                    <div id="CalDiv" runat="server" style="border:5px solid black;"/>
                </td>
            </tr>
            <tr>
                <td style="background-color:orange;">
                    <div id="ResDiv" runat="server" style="border:5px solid black;"/>
                </td>
                <td style="background-color:purple;">
                    <div id="EduDiv" runat="server" style="border:5px solid black;"/>
                </td>
                <td colspan="2" style="background-color:lightgreen;">
                    <div id="VacDiv" runat="server" style="border:5px solid black;"/>
                </td>
            </tr>
            <tr>
                <td colspan="4">
                    <table style="width:100%">
                        <tbody>
                            <tr>
                         ...