David Powers is the author of ten highly regarded books about web development, concentrating mainly on Dreamweaver, PHP, and CSS, including HTML5, CSS3, and jQuery with Dreamweaver CS5.5: Learn by Video (Adobe Press, 2011). He has also contributed to four other books on web design. David enjoys a strong relationship with senior members of the Dreamweaver engineering and product management team. Hersquo;s an Adobe Community Professional and Adobe Certified Instructor for Dreamweaver, and a PHP 5.3 Zend Certified Engineer.