JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">
    <div id="content"></div>
    <div id="logo"><div>
</div>

CSS

#content {
    border: 1px solid green;
    height: 300px;
    width: 100%;
    float: left;
}

#logo {
    border: 1px solid red;
    width: 50px; /*unknown width*/
    height: 50px;
    float: right;
}