JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<button type="button" class="btn btn-primary btn-md" data-toggle="modal" data-target="#myModal1">
              click me            </button>
        
<div class="modal fade" id="myModal1" tabindex="-1" role="dialog">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
        <h4 class="modal-title">FIRST MODAL</h4>
      </div>
      <div class="modal-body">
        <p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p><p>One fine body&hellip;</p>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
                    <button type="button" class="btn btn-primary btn-md" data-toggle="modal" data-target="#myModal2">
              Open 2nd Modal            </button>
              </div>
    </div><!-- /.modal-content -->
  </div><!-- /.modal-dialog -->
</div><!-- /.modal -->




<div class="modal fade" id="myModal2" tabindex="-1" role="dialog">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal"...

CSS

.modal { overflow: auto !important; }