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HTML5 Please - Use the new and shiny responsibly
To use native WebSockets in Firefox, the prefixed MozWebSocket should be used. However, Firefox 11 will support the IETF standard without the prefix. As a word of caution, the protocol backing the Web Socket API has become an IETF standard , but Safari has not yet implemented the (secure) new version.The following is a guest post by Menno van Slooten . You might notice we've been down this road before , but I quite like Menno's approach here. The end result proves you can get a little fancier with the design than I originally did, with borders, gradients, and shadows and while actually using less elements. A good-looking tab control usually has one feature that I've always found impossible to reproduce without images: borders that bend to the outside at the bottom of each tab. In this article I would like to show how you can use the CSS :before and :after pseudo elements to create this effect without using images. First, let's start with some basic markup.
(Better) Tabs with Round Out Borders | CSS-Tricks
HTML5 Cross Browser Polyfills - GitHub
Units is a JavaScript library for converting between angle and length units (including the 'rem' unit). Both are intended for use within other libraries that need to convert between acceptable CSS units when creating polyfills.