JSFiddle - React, Tailwind, and code Playground

HTML

<html>
    <head></head>
    <body>
<h1>Title</h1>

<nav class="r-set">
  <p><a href="#">Two</a></p>
</nav>

<div id="a">
  <h3>One</h3>
</div>

</body>
</html>

CSS

nav {
    background-color:#ccc;
    padding:1%;
    width:36%;
    height:200px;
    margin:1%;
}

#a {
    background-color:#FFC;
    padding:1%;
    width:58%;
}

.r-set {
    float:right;
}