JSFiddle - React, Tailwind, and code Playground

HTML

<div class="test">one</div>

CSS

span.mytest {
    width: 100px;
    height: 20px;
    background-color: red;
}

JavaScript

$(function(){
     var showdata = function(data){
        alert(data);        
    };
    
    $.getJSON("http://api.flickr.com/services/feeds/photos_public.gne?tags=cat&tagmode=any&format=json&jsoncallback=?", showdata );
       
});