Web Content Accessibility Guidelines 2.1
Discover the new WCAG set of guidelines (or 17 success criteria) presented in a comprehensive manner by Alan Dalton.
Animate.css
Fluidity
This Is Responsive | Tips, Resources and Patterns for Responsive Web Design
Patterns, resources and news for creating responsive web experiences
A Selection Of Web Apps That A Web Designer Should Know About
Get Your Form On: Modern Web Forms Tutorials
Back to basics: how to code an HTML5 template
All The Cheat Sheets An Up To Date Web Designer Needs: CSS3, HTML5 and jQuery
Responsive Design, Responsively Illustrated
HTML5 Form Field Validation with CSS3
60 Useful Web Developer Cheat Sheet Collection
6 Thinks I Learned About Print Stylesheets From HTML5 Boilerplate
Struggling with Semantics
25 Useful Html5 Cheat Sheets and Tutorials For Web Developer
Bring Your Forms Up to Date With CSS3 and HTML5 Validation
Internet Explorer 10 Developer Guide:CSS
Exciting reference, shame all properties are still vendor prefixed. "Internet Explorer 10 Developer Guide:CSS"
Responsive Web Design: Helpful Articles, Techniques & Tutorials
Sencha Touch The First HTML5 Mobile App Framework
8 Fast and Furious Tools to speed up your CSS and HTML Coding Time
HTML5 and CSS3 Snippets Every Web Developer Show Know
Powerful New CSS Techniques and Tools
Adactio: Journal—Sea change
Responsive design
Mobile HTML5 Boilerplate
Sencha - Sencha Animator
Create CSS3 Animations with Ease
Web Directions South 2010 Opening Titles
RT @stop: Mind blown. Bar raised. @themaninblue's title sequence for WDS, using HTML, CSS, and JS: (view in Chrome)
10 tips for designing mobile websites | These Days Labs
HTML5Rocks - Best Practices for a Faster Web App with HTML5
Google's tips and playground
Announcing an HTML5 mobile app framework for touch devices
check this out
HTML5 Doctor
Helping you implement HTML 5 today
Proudly Announcing: Modernizr | FarukAt.eş
Modernizr is a small JavaScript toolkit that uses feature detection techniques to determine whether or not the current browser is capable of any of the following features from CSS3 and HTML5.