flatpickr/master

HTML

<link rel="stylesheet" href="https://gitcdn.xyz/repo/picnicss/picnic/master/picnic.min.css">
<script src="https://npmcdn.com/flatpickr/dist/flatpickr.js"></script>
<link rel="stylesheet" href="https://npmcdn.com/flatpickr/dist/flatpickr.css">
<article>
  <input type="text" placeholder="Select Date.." class="flat1">
</article>

CSS

article {
  padding: 16px;
  width: 50%
}

.flat1 {
  /* width: 300px; */
  /* display: inline; */
}

JavaScript

const flat1 = flatpickr(".flat1", {
  mode: 'range',
  enableTime: true
});