JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.0/css/bootstrap.min.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/chosen/1.1.0/chosen.jquery.min.js"></script>
<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/chosen/1.1.0/chosen.min.css">
<div class="container">
    <div class="well">
         <h3>table with selects</h3>

        <!-- first table, with selects -->
        <div class="table-wrapper">
            <table class="table table-bordered">
                <thead>
                    <tr>
                        <th>Col 1</th>
                        <th>Col 2</th>
                    </tr>
                </thead>
                <tbody>
                    <tr>
                        <td>Foo</td>
                        <td>
                            <select name="foo" id="foo">
                                <option value="fun">fun</option>
                                <option value="happiness">happiness</option>
                                <option value="David">Wong</option>
                            </select>
                        </td>
                    </tr>
                    <tr>
                        <td>Bar</td>
                        <td>
                            <select name="bar" id="bar">
                                <option value="fun">fun</option>
                                <option value="happiness">happiness</option>
                                <option value="John">Cheese</option>
                                <option value="fake-option-1">1</option>
                                <option value="fake-option-2">2</option>
                                <option value="fake-option-3">3</option>
                                <option value="fake-option-4">4</option>
                                <option value="fake-option-5">5</option>
                                <option value="fake-option-6">6</option>
                                <option...

CSS

.table-wrapper {
    overflow-x: auto;
    overflow-y: visible;
}

JavaScript

$('select').chosen({
    width: '100%'
});