JSFiddle - React, Tailwind, and code Playground

HTML

<div id="searchBox"></div>
<div id="tableData"></div>

CSS

html, body {
    height: 100%;
    margin: 0;
}

#searchBox {
    background-color: red;
    width: 100%;
    height: 20%;
}

#tableData {
    background-color: blue;
    width: 100%;
    height: 80%;
}