JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
    <head>
    </head>
    <body>
        <div id='wrong'>
            jQuery outerWidth(true) inconsistent between Chrome 18.0.1025.152m and FireFox 11
            <br/>
            correct: 200px
        </div>
    </body>
</html>

CSS

#wrong {
    float: none;
    width: 200px;
    background-color: yellow;
    margin: auto;
}

JavaScript

$(document).ready(function(){
   alert($('#wrong').outerWidth(true));
});