JSFiddle - React, Tailwind, and code Playground

HTML

<div ID="header">
    <table ID="navbar">
        <tr>
            <td>Home</td>
            <td>About</td>
        </tr>
    </table>
</div>

CSS

#header {
background-color: yellow;
box-sizing: border-box;
position: fixed;
top: 0;
left: 0;
height: 35px;
width: 100%;
border-radius: 10px;
border: 2px solid red}