Responsive Web Design with HTML5 and CSS3

sliding doors technique (http://www.alistapart.com/articles/slidingdoors/),

The W3C working group note at http://www.w3.org/TR/CSS/#css3

Cascading Style Sheets (CSS ) were introduced as a way of separating design from the content. It took some time for web designers to step into the bold new world of CSS-based design but sites such as http://www.csszengarden.compaved the way, showing just what could be achieved, visually, with a CSS-based design.

W3C HTML5 validator (http://validator.w3.org/

The first line of any HTML document starts with the Doctype (Document Type Declaration) . This is the part that, if we are honest, gets added automatically by our code editor of choice or we can paste it from an existing boilerplate (nobody really enters the full HTML 4.01 Doctype out, do they?)

One web destination that is useful for inspiration is http://mediaqueri.es.

https://chrome.google.com/webstore/detail/kkelicaakdanhinjdeammmilcgefonfh

The term responsive web design was coined by Ethan Marcotte.

I remember, in school, every so often our super-mean (but actually very good) math teacher would be away. The class would breathe a collective sigh of relieve as, rather than "Mr Mean" (names have been changed to protect the innocent), the replacement was usually an easy-going and amiable man who sat quietly, leaving us to get on without shouting or constant needling. He didn't insist on silence whilst we worked, he didn't much care how elegant our workings were on the page

lt;meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="viewport" content="initial-scale=2.0,width=device-width" />
<title>And the winner isn't