JSFiddle - React, Tailwind, and code Playground

HTML

<div id="my_div">Hello</div>
<input type="button" Value="Click me" id="click"/>

CSS

#my_div{
    width:50px;
border:1px solid black;
    float:left;
}
#click
{
    margin-left:10px;
    float:left;
}