JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://cashforcarsanywhere.com/wp-content/themes/wpbootstrap-cashforcarsanywhere/style.css">
<div class="container">
    <div id="header-wrapper">
        <div id="header">
            <div class="header_left"><a href="http://cashforcarsanywhere.com/"><img src="http://cashforcarsanywhere.com/wp-content/themes/wpbootstrap-cashforcarsanywhere/images/logo.png" alt="" title="Old Junk Car" /></a>
            </div>
            <div class="header_right">
                <div class="menu">
                    <ul class="nav">
                        <li><a href="http://cashforcarsanywhere.com/home/">HOME</a>
                        </li>
                        <li><a href="http://cashforcarsanywhere.com/how-it-works/">HOW IT WORKS</a>
                        </li>
                        <li><a href="http://cashforcarsanywhere.com/about-us/">ABOUT US</a>
                        </li>
                        <li><a href="http://cashforcarsanywhere.com/contact-us/">CONTACT US</a>
                        </li>
                    </ul>
                </div>
                <div class="right_header_bottom">
                    <div class="callus">Call Now : (888) 316-5780</div>
                    <div class="followus">Follow Us:</div>
                    <div class="followus_icon">
                        <ul>
                            <li><a href="#"><img class="social-links" src="http://cashforcarsanywhere.com/wp-content/themes/wpbootstrap-cashforcarsanywhere/images/follow_01.png" /></a>
                            </li>
                            <li><a href="#"><img class="social-links" src="http://cashforcarsanywhere.com/wp-content/themes/wpbootstrap-cashforcarsanywhere/images/follow_02.png" /></a>
                            </li>
                                <li><a href="#"><img class="social-links" src="http://cashforcarsanywhere.com/wp-content/themes/wpbootstrap-cashforcarsanywhere/images/follow_03.png" /></a>
                 ...

CSS

div#howitworkscontent {
    float:none;
    margin:0px auto;
}