JSFiddle - React, Tailwind, and code Playground

HTML

<div id="Markup" class="dropzone">Markup</div>
<div id="Style" class="dropzone">Style</div>

<ul>
<li draggable="true">HTML5</li>
<li draggable="true">CSS3</li>
<li draggable="true">XHTML 1</li>
<li draggable="true">JavaScript</li>
</ul>

CSS

.dropzone {
  text-align: center;
  background: #EEE;
  border: 0.2em solid #000;
  padding: 3em;
  margin: 0.5em 0;
}

.dropzone.valid {
  background: #EFE;
  border: 0.2em solid #0F0;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
li {
  background: #EEE;
  border: 0.2em solid #000;
  padding: 0.5em;
  margin: 0.5em 0;
}
[draggable=true] {
  cursor: move;
}

JavaScript

$('li').on('dragstart', function(evt){
  console.log('Start');
  evt.originalEvent.dataTransfer.setData('text', 'Hallo Welt!');
});
$('li').on('drag', function(evt){
  //console.log('Drag');
});
$('li').on('dragend', function(evt){
  console.log('Ende');
});

$('.dropzone').on('dragover', function(evt){
  evt.preventDefault();
  //console.log("over elem");
});

$('.dropzone').on('dragenter', function(evt){
  $(this).addClass('valid');
  evt.preventDefault();
  console.log("entered");
});

$('.dropzone').on('dragleave', function(evt){
  $(this).removeClass('valid');
  console.log("left");
});

$('.dropzone').on('drop', function(evt){
  evt.preventDefault();
  //$(this).removeClass('valid');
  //window.alert(evt.originalEvent.dataTransfer.getData('text'));
});