How do I style the HTML5 form validation error messages with CSS?
Currently, there is no way to style those little validation tooltips. The only other option, which is what I have chosen to do, is to disable the browser validation all together for now and rely on my own client-side validation scripts.
According to this article: http://blog.oldworld.fr/index.php?post/2010/11/17/HTML5-Forms-Validation-in-Firefox-4
"The simplest way to opt out is to add the novalidate attribute to your <form>
. You can also set formnovalidate on your submit controls."