JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://cdnjs.cloudflare.com/ajax/libs/knockout/2.3.0/knockout-min.js"></script>
<script src="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css">
<div class="container">
    <!-- Content Table -->
    <div class="content">
        <div class="row">
            <div id="scrollMe" class="col-md-12">
                <select id="multiSelect" class="form-control multiselect" multiple="multiple">
                    <option value="volvo">Volvo</option>
                    <option value="saab">Saab</option>
                    <option value="opel">Opel</option>
                    <option value="audi">Audi</option>
                    <option value="volvo">Volvo</option>
                    <option value="saab">Saab</option>
                    <option value="opel">Opel</option>
                    <option value="audi">Audi</option>
                    <option value="volvo">Volvo</option>
                    <option value="saab">Saab</option>
                    <option value="opel">Opel</option>
                    <option value="audi">Audi</option>
                </select>
                <br>
                <br>
                <select class="form-control">
                    <option value="volvo">Volvo</option>
                    <option value="saab">Saab</option>
                    <option value="opel">Opel</option>
                    <option value="audi">Audi</option>
                    <option value="volvo">Volvo</option>
                    <option value="saab">Saab</option>
                    <option value="opel">Opel</option>
                    <option value="audi">Audi</option>
                    <option value="volvo">Volvo</option>
                    <option value="saab">Saab</option>
                    <option value="opel">Opel</option>
                    <option value="audi">Audi</option>
               ...

CSS

#scrollMe {
    height:150px;
    background-color:yellow;
    overflow: inherit !important;
    overflow-x:hidden;
    padding:20px;
}

JavaScript

// Helped by the code of : pete-experimenter
// Due to bootstrap-multiselect.js not being available on CDN, it's included first below.
// My code begins on line 570


/**
 * bootstrap-multiselect.js 1.0.0
 * https://github.com/davidstutz/bootstrap-multiselect
 *
 * Copyright 2012, 2013 David Stutz
 * 
 * Dual licensed under the BSD-3-Clause and the Apache License, Version 2.0.
 * See the README.
 */! function ($) {
    "use strict"; // jshint ;_;

    if (typeof ko != 'undefined' && ko.bindingHandlers && !ko.bindingHandlers.multiselect) {
        ko.bindingHandlers.multiselect = {
            init: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {},
            update: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
                var ms = $(element).data('multiselect');
                if (!ms) {
                    $(element).multiselect(ko.utils.unwrapObservable(valueAccessor()));
                } else if (allBindingsAccessor().options && allBindingsAccessor().options().length !== ms.originalOptions.length) {
                    ms.updateOriginalOptions();
                    $(element).multiselect('rebuild');
                }
            }
        };
    }

    function Multiselect(select, options) {

        this.options = this.getOptions(options);
        this.$select = $(select);
        this.originalOptions = this.$select.clone()[0].options;
        //we have to clone to create a new reference
        this.query = '';
        this.searchTimeout = null;

        this.options.multiple = this.$select.attr('multiple') == "multiple";

        this.$container = $(this.options.buttonContainer).append('<button type="button" class="multiselect dropdown-toggle ' + this.options.buttonClass + '" data-toggle="dropdown">' + this.options.buttonText(this.getSelected(), this.$select) + '</button>')
            .append('<ul class="multiselect-container dropdown-menu' + (this.options.dropRight ? '...