JSFiddle - React, Tailwind, and code Playground
HTML
<section class = muliticolumn >
<img class="menuSmall" src="../images/margherita.png" onmouseover="showMargTopp()">
<h2>Margherita</h2>
<p id="margTopp">Tomato, mozzarella and basil</p>
</section>
CSS
#margTopp{display:none;}
JavaScript
function showMargTopp() {
document.getElementById("margTopp").style.display="block";
}