JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<div>
  <table>
    <thead>
      <tr>
        <th>Important</th>
        <th>Information</th>
        <th>Interchange</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>Hello world</td>
        <td>again</td>
        <td>and we're done</td>
      </tr>
         <tr>
        <td>Hello world</td>
        <td>again</td>
        <td>and we're done</td>
      </tr>
      <tr>
        <td>More things to come</td>
        <td>over 9000%</td>
        <td>Cow level is real!</td>
      </tr>
    </tbody>
  </table>
</div>

CSS

div {
  background: #edf0f1;
  padding: 20px;
}
table {
  table-layout: fixed;
  width: auto;
  border-collapse: separate;
  border-spacing: 0;
}
td {
  padding: 10px;
  background-color: #fff;
  border: 0px solid #edf0f1;
  border-right-width: 10px;
  border-left-width: 10px;
}
td.highlight,
th.highlight {
  border-right-color: black;
  border-left-color: black;
}
tr:last-child td {
  border-bottom-width: 10px;
}
tr:last-child td.highlight {
  border-bottom-color: black;
}
th {
  border: 0px solid #edf0f1;
  border-top-width: 10px;
  border-right-width: 10px;
  border-left-width: 10px;
}
th.highlight {
  border-top: 10px solid black;
}

JavaScript

$(function() {
  var $cols = $("td:nth-child(2), th:nth-child(2)");
  $cols.hover(function() {
    $cols.addClass("highlight");
  }, function() {
    $cols.removeClass("highlight");
  });
});