JSFiddle - React, Tailwind, and code Playground

HTML

<div id="about_us">
    <h3>About Us</h3>
    <p>This website is the culmination of several months of intensive research 
        and collaboration. </p>
    <p>We painstakingly gathered data and are presenting it to the world here. </p>
    <a href="#"><span>Read More</span></a> 
</div>

CSS

#about_us {
    float: left;
    width: 264px;
    padding: 15px 20px 65px;
    border: 1px #ccc solid;
    position: relative;
    
    -moz-border-radius: 10px;
    -webkit-border-radius: 10px;
    border-radius: 10px;
    
    -moz-box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.1);
    -webkit-box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.1);
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.1);
}

#about_us h3 {
    border-bottom: 2px solid #999;
    font-size: 30px;
    font-family: Arial, sans-serif;
    font-weight: bold;
    color: #999;
    text-align: center;
    margin: 0 20px;
    padding: 5px 0;
}

#about_us p {
    font-family: Georgia;
    font-size: 15px;
    line-height: 1.4em;
    margin: 12px 15px;
    text-align: center;
    font-style: italic;
    z-index: 50;
}

#about_us a {
    display: block;
    height: 100%;
    width: 100%;
    left: 0;
    position: absolute;
    text-decoration: none;
    top: 0;
    z-index: 80;
}

#about_us a span {
    margin: 230px 0 0;
    position: absolute;
    text-align: center;
    width: inherit;
    background: #438706;
    color: #FFFFFF;
    font-family: Arial,Helvetica,sans-serif;
    font-size: 12px;
    font-weight: bold;
    padding: 5px 0;
    cursor: pointer;
    
    -moz-box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    -webkit-box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    
    text-shadow: 0 1px 0 #000000;
}

#about_us a:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

#about_us a:hover span {
    background: #61C109;
}