JSFiddle - React, Tailwind, and code Playground

HTML

<div id="out-section">
  <div class="why-out" id="out-head">WHAT'S OUT</div>
  <br/>
  <div class="why-out" id="gluten">Gluten/Grain /OUT</div>
  <br>
  <div class="why-out" id="dairy">Dairy /OUT </div>
  <br>
  <div class="why-out" id="soy">Soy /OUT </div>
  <div class="why-out" id="gmo">GMO's /OUT </div>
  <div class="why-out" id="preservatives">Preservatives /OUT </div>
  <div class="why-out" id="fillers">Fillers /OUT </div>
  <div class="why-out" id="sugars">Refined Sugars /OUT </div>
</div>

<div class="why-out hide" id="why-out-pop">
    <p>This is a test</p>
</div>

CSS

.hide {
  visibility: hidden;
}

#why-out-pop {
  position: absolute;
  margin-top: -158px;
  margin-left: 30px;
  border-style: solid;
  border-width: 3px;
  border-radius: 40px;
  border-color: black;
  background-color: #c3c3c3;
  padding: 10px;
  color: black;
  text-align: right;
  font-weight: light;
  z-index: 1000;
}

.why-out {
  text-align: right;
  font-weight: bold;
}
#out-head {
  text-align: right;
  font-weight: bold;
}
</style>

JavaScript

$( document ).ready(function(){

  var buildHtml = function(id) {
    console.log(id);
    var html;
    switch (id) {
      case 'gluten':
        html = '<p>This is why gluten sucks</p>';
      case 'dairy':
        html = '<p>This is why dairy sucks<p>';
      case 'soy':
        html = '<p>This is why soy sucks<p>';
      case 'gmo':
        html = '<p>This is why gmo sucks<p>';
      case 'preservatives':
        html = '<p>This is why preservatives suck<p>';
      case 'fillers':
        html = '<p>This is why fillers suck<p>';
      case 'sugars':
        html = '<p>This is why sugars suck<p>';
    }
    return html;
  };

  $( ".why-out" ).hover(
    function() {
     console.log(this);
      var html = buildHtml(this.id);
      $('#why-out-pop').html('');
      //console.log(html);
      $('#why-out-pop').append(html).removeClass('hide');

    }, function() {
      $('#why-out-pop').html('').addClass('hide');
    }
  );


});