JSFiddle - React, Tailwind, and code Playground

by Chris Rebert

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<div class="modal fade" style="" id="myModal">
    <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">Modal title</h4>
        </div>
        <div class="modal-body">

          <div class="outer">
            <span> outdiv: <em>position with relative value </em></span>
            <div style="height: 700px" class="inner">
              <span>inner div: <em>height: 700px </em></span>
            </div>
          </div>
        </div>
        <div class="modal-footer">
          <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
          <button type="button" class="btn btn-primary">Save changes</button>
        </div>
      </div>
      <!-- /.modal-content -->
    </div>
    <!-- /.modal-dialog -->
  </div>
  <!-- /.modal -->

CSS

.modal-dialog {
    overflow: hidden;
  }

/*  .modal-body {
    max-height: 400px;
    min-height: 200px;
    overflow: auto;
  }*/

  .outer {
    background: whiteSmoke;
    position: relative;
  }

  .inner {
    background: #eee;
    width: 80%;
    margin: auto;
  }
  .outer span{
    display: block;
    margin: 10px;
  }

JavaScript

$('#myModal').modal('show');