JSFiddle - React, Tailwind, and code Playground

HTML

<div class="flex-row flex-fill">
    <div class="flex-col">
        <div class="menu">
            <ul>
                <li>menu item</li>
                <li>menu item</li>
                <li>menu item</li>
                <li>menu item</li>
            </ul>
        </div>
    </div>
    
    <div class="flex-col flex-fill">
        <div class="header">header</div>
        <div class="main-content">
            <div class="card">
                <div id="table1"></div>
            </div>
        </div>
    </div>

CSS

* { box-sizing: border-box; }

html { height: 100%; }

body {  
    min-height: 100%;
    display: flex;
    margin: 0;
    padding: 0; 
}

.flex-row {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: flex-start;
    width: 100%;
}

.flex-col {
    display: flex;
    flex-direction: column;
    flex-flow: column;
    flex-wrap: nowrap;
    justify-content: flex-start;
}

.flex-col.flex-fill {
     width: 100%;
 }

.flex-right {
    margin-left: auto;
}

.menu {
    width: 200px;
    background-color: blue;
    color: xwhite;
    padding: 15px;
    flex-grow: 1;
}

.header {
    background-color: red;
    padding: 15px;
    font-family: italic;
    font-size: 1.5em;
}

.main-content {
    background-color: green;
    height: 100%;
    flex-grow: 1;
    padding-bottom: 30px;
}

.card {
    width: 75%;
    margin: 0 auto;
    margin-top: 30px;
    background-color: white;
    border: 1px white solid;
    border-radius: 3px;
    padding: 15px;
}

JavaScript

setTimeout(function () { 

    var html = "<table><tr><td>data</td><td>data</td><td>data</td><td>data</td></tr><tr><td>data</td><td>data</td><td>data</td><td>data</td></tr><tr><td>data</td><td>data</td><td>data</td><td>data</td></tr><tr><td>data</td><td>data</td><td>data</td><td>data</td></tr><tr><td>data</td><td>data</td><td>data</td><td>data</td></tr><tr><td>data</td><td>data</td><td>data</td><td>data</td></tr><tr><td>data</td><td>data</td><td>data</td><td>data</td></tr><tr><td>data</td><td>data</td><td>data</td><td>data</td></tr><tr><td>data</td><td>data</td><td>data</td><td>data</td></tr><tr><td>data</td><td>data</td><td>data</td><td>data</td></tr><tr><td>data</td><td>data</td><td>data</td><td>data</td></tr><tr><td>data</td><td>data</td><td>data</td><td>data</td></tr><tr><td>data</td><td>data</td><td>data</td><td>data</td></tr><tr><td>data</td><td>data</td><td>data</td><td>data</td></tr></table>"

	var table = document.getElementById("table1");

	table.innerHTML = html;
    
}, 1000);