JSFiddle - React, Tailwind, and code Playground

HTML

<table border="1">
<tr>
<td width="200">
    left menus (200px)
</td>
    <td>
        
        <table class="small">
            <tr>
                <td>2000px asdfasdfasdf asdfas dfasdfasd fasdf</td>
                <td>2000px</td>
            </tr>
        </table>
    </td>
</tr>
</table>

CSS

.small {
    table-layout:fixed;
    background-color:#ddd;
    border:1px;       
}

.small td{
    display:block;
    width:2000px;
    
}