New Safari CSS3 features in OS X Lion


WOFF support
Support for the Web Open Font Format (WOFF) gives web designers and developers the ability to use a wider range of fonts on websites.

CSS3 auto-hyphenation
Support for CSS3 auto-hyphenation allows developers to provide better reading experiences and text layouts.

CSS3 vertical text
Support for CSS3 vertical text allows for top-to-bottom text layouts in web pages. This enables greater customization of websites in languages that use vertical text, such as Chinese, Japanese, and Korean.

CSS3 text emphasis
With the text emphasis property, web pages can display emphasis marks in East Asian text.

Custom content in extensions
Safari now allows extensions to show custom HTML content in a borderless window from the extension’s toolbar, or when you click an icon in the extension’s toolbar.

Further reading:
Safari technology overviews
Safari Dev Center

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