Bootstrap is Twitter's toolkit for creating rich and more consistent web interfaces across browsers and devices. The Bootstrap ecosystem offers, among other things, an iconic font, themes, a customization generator, themes for Wordpress / Drupal + / Joomla, templates for Fireworks / Photoshop, a button generator and a jQuery UI theme. How to get started? Check out this tutorial or this series or even this. Built With Bootstrap has lots of examples on how developers are putting Bootstrap to good use.
"We all can agree...that this text is red. We can also similarly agree that this text is blue." [more inside]
The iPad, which you may have heard of, has brought HTML5 into the consciousness of many. Here Gizmodo explains what HTML5 is and why it wont save the internet. Previously.
rendur 2.1 - Dynamic HTML/CSS preview in your browser. A quick way to try out a bit of HTML and CSS code. Whatever you put in the box renders to its left. Now works in IE, though it's a bit better in Firefox (thanks to on-the-fly style sheet definitions). [via mefi projects]
3dHTML. No Flash, no nothing. Wow.