JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<div class="modal fade" id="registermodal" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
                <h4 class="modal-title" id="registerDevice">Klargjøring</h4>
            </div>
            <div class="modal-body">
                <div id="registerContent" class="form-group">
                    <form class="form-horizontal">
                        <div class="form-group">
                            <label for="Enhetsnavn" class="col-lg-4 control-label">UUID</label>
                            <div class="col-lg-8">
                                <input type="text" class="form-control" id="uuid" placeholder="">
                            </div>
                        </div>
                        <div class="form-group">
                            <label for="AppleID1" class="col-lg-4 control-label">Apple-ID #1</label>
                            <div class="col-lg-8">
                                <input type="text" class="form-control" id="AppleID1" placeholder="">
                            </div>
                        </div>
                        <div class="form-group">
                            <label for="AppleIDPassword1" class="col-lg-4 control-label">Apple-ID Password #1</label>
                            <div class="col-lg-8">
                                <input type="text" class="form-control" id="AppleIDPassword1" placeholder="">
                            </div>
                        </div>
                        <div class="form-group">
                            <label for="AppleID2" class="col-lg-4 control-label">Apple-ID #2</label>
                         ...

JavaScript

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