JSFiddle - React, Tailwind, and code Playground

HTML

<table id='t1' border='1' class="table-block">
    <tbody>
        <tr class="table-block-header">
            <th>Column name1</th>
            <th>+</th>
            <th>Column name2</th>
            <th class="table-block-header">10.04.2015</th>
            <th class="table-block-header">11.04.2015</th>
            <th class="table-block-header">12.04.2015</th>
            <th class="table-block-header">13.04.2015</th>
            <th class="table-block-header">14.04.2015</th>
            <th class="table-block-header">15.04.2015</th>
            <th class="table-block-header">16.04.2015</th>
            <th class="table-block-header">17.04.2015</th>
            <th class="table-block-header">18.04.2015</th>
            <th class="table-block-header">19.04.2015</th>
            <th class="table-block-header">20.04.2015</th>
            <th class="table-block-header">21.04.2015</th>
            <th class="table-block-header">22.04.2015</th>
        </tr>
        <tr>
            <td rowspan="2">
                <input type="checkbox" class="x_selector" value="value1">dummy</td>
            <td>
                <input type="checkbox" class="y_selector" name="VALUE1" value="12345">
            </td>
            <td>text1</td>
            <td>
                <div class="div_up"></div>
                <div class="div_mid">100.00%</div>
                <div class="div_down">0/632</div>
            </td>
            <td>
                <div class="div_up">0.00</div>
                <div class="div_mid">100.00%</div>
                <div class="div_down">0/199</div>
            </td>
            <td>
                <div class="div_up">0.00</div>
                <div class="div_mid">100.00%</div>
                <div class="div_down">0/60</div>
            </td>
            <td>
                <div class="div_up">0.00</div>
                <div class="div_mid">100.00%</div>
                <div class="div_down">0/484</div>
            </td>
            <td>
       ...