JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
<script src="http://weareoutman.github.io/clockpicker/dist/jquery-clockpicker.min.js"></script>
<link rel="stylesheet" href="http://weareoutman.github.io/clockpicker/dist/jquery-clockpicker.min.css">
<div class="modal fade appointment-modal"
     id="appointment-modal"
     tabindex="-1"
     role="dialog"
     aria-labelledby="myModalLabel"
     aria-hidden="true">

<div class="modal-dialog tutors-modal">
    <div class="modal-content tutors-modal">
        <div class="modal-header">
            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
            <h4 class="modal-title">Appointment Scheduler</h4>
        </div>
        <div class="modal-body" style="height: 575px; left: 2.5%;">
            <div class="container">
                <div class="row">
                    <div class="col-md-12">     
                        <div class="alert alert-danger"><span class="glyphicon glyphicon-alert"></span>
                            <form role="form" action="/portal/make-appointment/" method="post" id="appointment_form" class="form-horizontal">
                                <div class="col-lg-6">

                                    <div class="input-group clockpicker" id = "clockpicker" style="padding: 6px; padding-bottom: 20px;">
                                        <input type="text" class="form-control" id = "time" name="time" value="08:00"/>
                                        <span class="input-group-addon">
                                            <span class="glyphicon glyphicon-time"></span>
                                        </span>
                                    </div>
                                    <input type="submit" name="submit" id="submit" value="Schedule Appointment" class="btn btn-info...

CSS

.popover {
    z-index: 999999;
}

JavaScript

var input = $('#time');
    input.clockpicker({
    autoclose: true,
        twelvehour: true
    });