JSFiddle - React, Tailwind, and code Playground

HTML

<table class="table">
    <tr><td>Cell1a</td><td>Cell1b</td><td>Cell1c</td></tr>
    <tr><td>Cell2a</td><td>Cell2b</td><td>Cell2c</td></tr>
    <tr><td>Cell3a</td><td>Cell3b</td><td>Cell3c</td></tr>
</table>

<br>
<table cellpadding="9" cellspacing="5" style="border-collapse:collapse;" border="1">
    <tr><td>Cell1a</td><td>Cell1b</td><td>Cell1c</td></tr>
    <tr><td>Cell2a</td><td>Cell2b</td><td>Cell2c</td></tr>
    <tr><td>Cell3a</td><td>Cell3b</td><td>Cell3c</td></tr>
</table>

CSS

.table {
        width: 100%;        
        border-top:1px solid red;
        border-right:1px solid red;
        border-collapse:collapse;
    }
.table td {
    padding: 7px;
    border-bottom:1px solid red;
    border-left:1px solid red;
}