JSFiddle - React, Tailwind, and code Playground

HTML

<table class="csstable"> 
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
    </tr>
</table>

<table cellspacing="5" cellpadding="5"> 
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
    </tr>
</table>

CSS

table, td { border: 1px solid black; }

.csstable { 
    border-spacing: 5px; 
}
.csstable th, 
.csstable td { 
    padding: 5px;
}