HTML5 is the standard language of the Web, developed by the World Wide Web Consortium, also known as W3C. HTML5 is and will continue to be THE essential technology for organizations delivering applications across multiple platforms. This Specialization covers how to write syntactically correct HTML5 and CSS3, and how to create interactive web experiences with JavaScript. Mastering this range of technologies will allow you to develop high quality web sites that, work seamlessly on mobile, tablet, and large screen browsers accessible. The end result is a deeper understanding of how the various building blocks work together, and you'll have a working site as well!