JSFiddle - React, Tailwind, and code Playground

HTML

<div class="box">
            <div class="inner-box">    
            Hello world!
            </div>
        </div>
        <div class="box">
            <div class="inner-box">    
            How are you?
            </div>
        </div>
        <div class="box">
            <div class="inner-box">    
            Yeah
            </div>
        </div>

CSS

* {
    margin: 0;
    padding: 0;
}

body {
    font: 16px "Segoe UI", "Segoe WPC", Helvetica, Arial, "Arial Unicode MS", Sans-Serif;
}

div {
    float: left;
}

::selection {
    color: white;
    background-color: rgba(0,132,180,0.99);
}


.inner-box {
    margin: 20px 40px 20px 40px;
}

.box:hover {
    background: lightgrey;
}