JSFiddle - React, Tailwind, and code Playground

HTML

<div class = "popup">
    <div class = "upper">
        <img src = "http://www.tapeta-mis-galazki-koala.na-pulpit.com/pokaz_obrazek.php?adres=mis-galazki-koala&rozdzielczosc=128x128" />
    </div>
    <div class = "description">This is a very interesting description of what you can see above.</div>
</div>

CSS

.popup
{
    position: fixed;
    left: 50px; 
    top: 50px;
    border: 1px solid;
    background: #fff;
    padding: 10px;
    box-shadow: 0 0 5px #000;
    display: inline-block;
    max-width: 140px;
}
.popup .upper {
    min-width: 100px;
    min-height: 100px;
    border: 1px solid;
    padding: 5px;
    display: inline-block;
}
.popup .upper img {
    display: block;
}