JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/dot-luv/jquery-ui.css">
<table> 
    <tr> 
        <th>Name</th> 
        <th>Cards sent</th> 
        <th>Cards received</th> 
        <th>Cards written but not sent</th> 
    </tr> 
    <tr> 
        <td>Ann</td> 
        <td>40</td> 
        <td>28</td> 
        <td>4</td> 
    </tr> 
    <tr> 
        <td>Joe</td> 
        <td>2</td> 
        <td>27</td> 
        <td>29</td> 
    </tr> 
    <tr> 
        <td>Paul</td> 
        <td>5</td> 
        <td>35</td> 
        <td>2</td> 
    </tr> 
    <tr> 
        <td>Louise</td> 
        <td>65</td> 
        <td>65</td> 
        <td>0</td> 
    </tr> 
</table>

CSS

body {
    padding: 40px;
    margin: 0;
    font: 0.9em Arial, Helvetica, sans-serif;
}

table {
    border-collapse: collapse;
    border: 1px solid #124412;
    width: 600px;
}

th {
    border: 1px solid #124412;
    background-color: #334f33;
    color: #fff;
    padding: 0.4em;
    text-align: left;
}

td {
    padding: 0.4em;
}

tr:nth-child(odd) td {
    background-color: #86B486;
}
tr.odd td {
    background-color: #86B486;
}

JavaScript

$("tr:nth-child(odd)").addClass("odd");