Selectize - Slide Down Content Below Dropdown Options

HTML

<script src="http://brianreavis.github.io/selectize.js/js/selectize.js"></script>
<link rel="stylesheet" href="http://brianreavis.github.io/selectize.js/css/selectize.default.css">
<select id="sel">
    <option value="1">Hello</option>
    <option value="2">Stack</option>
    <option value="3">Overflow</option>
</select>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque interdum velit neque, molestie commodo ligula eleifend vestibulum. Mauris at auctor lacus, at blandit ligula. Nulla pharetra lacus lorem, dictum aliquet massa luctus vitae. Aenean et leo consectetur, pretium lectus at, lobortis sem. Phasellus sollicitudin vehicula laoreet. Etiam ac nibh a risus imperdiet egestas a sit amet nulla. Nulla scelerisque est laoreet tortor accumsan, id lacinia ligula luctus.

CSS

.selectize-dropdown {
    position: ;
}

JavaScript

$(document).ready(function () {
    $('#sel').selectize({
        create: false,
        sortField: 'text',
        onDropdownOpen: function () {
            $(".selectize-dropdown").stop().hide().slideDown();
        },
        onDropdownClose: function () {
            $(".selectize-dropdown").stop().show().slideUp();
        }
    });
});