How to 'cut' DOM element and display it in other place?

I have website, and i want to cut every div#id from .tab-content and add every div to every li item only when viewport width is less than 768px;

My html page:

    <section id="menu">
    <div class="container">
        <div class="row">
            <div class="col-xs-12">
                <ul id="menu-nav" class="nav nav-pills text-center">
                    <li class="active"><h2><a href="#about" data-toggle="tab">About</a></h2></li>
                    <li><h2><a href="#services" data-toggle="tab">Services</a></h2></li>
                    <li><h2><a href="#contact"  data-toggle="tab">Contact</a></h2></li>
                </ul>
            </div>
        </div>
        <div class="row">
            <div class="col-xs-12">
                <div class="tab-content">
                    <div class="tab-pane active" id="about">
                        <div class="col-sm-8 col-sm-offset-2">
                            <p class="text-center">
                            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Debitis odit id praesentium, maxime, harum corporis officia laboriosam earum laudantium mollitia et quas, iure enim expedita. Nam sit, est libero obcaecati.
                            </p>
                        </div>
                    </div>

                    <div class="tab-pane" id="services">
                        <div class="col-sm-8 col-sm-offset-2">
                            <p class="text-center">
                            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Debitis odit id praesentium, maxime, harum corporis officia laboriosam earum laudantium mollitia et quas, iure enim expedita. Nam sit, est libero obcaecati.
                            </p>
                        </div>
                    </div>

                    <div class="tab-pane" id="contact">
                        <div class="col-sm-8 col-sm-offset-2">
                            <p class="text-center">
                            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Debitis odit id praesentium, maxime, harum corporis officia laboriosam earum laudantium mollitia et quas, iure enim expedita. Nam sit, est libero obcaecati.
                            </p>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</section>

I tried to use jquery for every div#ID, but it's not working.

    $(document).ready(function(){

  if ($(window).width() < 768) {
    var divAbout = $('#about').pop();
    $(divAbout).appendTo('#menu-nav li:first-of-type');
}

});

Thank's a lot for help.