JSFiddle - React, Tailwind, and code Playground

HTML

<html>
<head>
</head>

<body>
<div id="udvalgt_forside">
        <p>Testing tesing</p>
</div>
</body>
</html>

CSS

#udvalgt_forside {
    position:relative;
    background-color:red;
    height:300px;
    width:200px;
    }
    #udvalgt_forside p {
    position:absolute;
    bottom:20px;
    width:100%;
    background-color:#323232;
    color:#fff;
    padding:0;
    margin:0;
    filter:alpha(opacity=80);
    opacity: 0.8;
    -moz-opacity:0.8;
    }