JSFiddle - React, Tailwind, and code Playground

HTML

<div class="outer">
    <div class="info">
        whategver
    </div>
    <table class="table">
        <tr>
            <td>hello</td>
        </tr>
    </table>
</div>

CSS

.outer {
    float:left;
    width:40%;
}
.outer .info {
    border-right: 1px solid red;
    background-color:yellow;
}
.table {
    display:block;
    border-right: 1px solid blue;
}