JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tr class="my-style">
      <td>one</td>
      <td class="my-style-2">two</td>
      <td class="my-style-2">three</td>
    </tr>
    <tr class="my-style">
      <td class="my-style-2">one</td>
      <td>two</td>
      <td class="my-style-2">three</td>
    </tr>
  <table>

CSS

tr.my-style td.my-style-2
{
  border-top: 1px solid #F00;
}

td.my-style-2 ~ td.my-style-2 {
 border-top:none;
}