JSFiddle - React, Tailwind, and code Playground

HTML

<table id="main_table" style="width:100%">
    <thead>
        <tr class="firstline">
            <th colspan="2">Column1</th>
            <th colspan="2">Column2</th>
            <th colspan="2">Column3</th>
            <th colspan="2">Column4</th>
        </tr>
    </thead>
    <tbody>
        <tr style="width:1002px; background-color:green; color:white">
            <td  colspan="2" class="flip" style="width:250px;"> Section 1 </td>
              <td  colspan="2" class="flip" style="width:250px;"> Section 1 </td>
             <td  colspan="2" class="flip" style="width:250px;"> Section 1 </td>
             <td  colspan="2" class="flip" style="width:250px;"> Section 1 </td>
        </tr>
    </tbody>
    <tbody class="section">
        <tr>
            <td style="width:125px;">item 111sdfgadgrfag</td>
            <td>item 112</td>
            <td>item 113</td>
            <td>item 114</td>
            <td>item 115</td>
            <td>item 116</td>
            <td>item 117</td>
            <td>item 118dfgdfgdfgdfgg</td>
      </tr>
        <tr>
            <td colspan="2">item 121</td>
            <td colspan="2">item 122</td>
            <td colspan="2">item 123</td>
            <td colspan="2">item 124</td>
        </tr>
        <tr>
            <td colspan="2">item 131</td>
            <td colspan="2">item 132</td>
            <td colspan="2">item 133</td>
            <td colspan="2">item 134</td>
        </tr>
    </tbody>
    <tbody>
        <tr style="background-color:green; color:white">
            <td  colspan="2" class="flip" style="width:250px;"> Section 2 </td>
             <td  colspan="2" class="flip" style="width:250px;"> Section 2 </td>
             <td  colspan="2" class="flip" style="width:250px;"> Section 2 </td>             <td  colspan="2" class="flip" style="width:250px;"> Section 2 </td>
        </tr>
    </tbody>
    <tbody class="section">
        <tr>
            <td colspan="2">item 211</td>
            <td colspan="2">item 212</td>
  ...

CSS

td {
    padding: 5px;
    word-wrap:break-word;
}
.section{
display:none;
background-color:#ccc;    
    width:1002px;
}
#main_table{table-layout:fixed;}

JavaScript

$('.flip').click(function() {
    $(this)
        .closest('tbody')
        .next('.section')
        .toggle('fast');
});