JSFiddle - React, Tailwind, and code Playground

by panchroma

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js"></script>
<div id="geo" class="geo"></div>

CSS

.geo {
  color: green;
}
body[data-hide-geo] .geo {
  color: red;
}

JavaScript

if (Modernizr.geolocation) {
 alert("yes");
} else {
  alert("no");
}