JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tr>
        <td>6</td>
        <td>6</td>
    </tr>
</table>

CSS

body{
background:#666;
}

table{
border-spacing: 0;
    border-top:1px solid #222;
border-bottom:1px solid #ccc; 
}

td{
width:300px;
height:100px;
background:#666;
padding:0;
border-top:1px solid #ccc;
border-bottom:1px solid #222;    
}