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>
    <thead>
        <tr><th>Customer</th><th>Order</th><th>Month</th></tr>
    </thead>
    <tbody>
        <tr><td>Customer 1</td><td>#1</td><td>January</td></tr>
        <tr><td>Customer 1</td><td>#2</td><td>April</td></tr>
        <tr><td>Customer 1</td><td>#3</td><td>March</td></tr>
    </tbody>
    <tbody>
        <tr><td>Customer 2</td><td>#1</td><td>January</td></tr>
        <tr><td>Customer 2</td><td>#2</td><td>April</td></tr>
        <tr><td>Customer 2</td><td>#3</td><td>March</td></tr>
    </tbody>
    <tbody>
        <tr><td>Customer 3</td><td>#1</td><td>January</td></tr>
        <tr><td>Customer 3</td><td>#2</td><td>April</td></tr>
        <tr><td>Customer 3</td><td>#3</td><td>March</td></tr>
    </tbody>
</table>

CSS

thead th { width: 100px; border-bottom: solid 1px #ddd; font-weight: bold; }
tbody:nth-child(odd) { background: #f5f5f5;  border: solid 1px #ddd; }
tbody:nth-child(even) { background: #e5e5e5;  border: solid 1px #ddd; }