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The Movement You're excited about HTML5; we are too. You've not just been enjoying the HTML5-powered web already — you're building it! As adoption and inspiration spreads, the web community will find creative ways to apply HTML5 and related technologies, spark trends, and capture best practices.
Because you can easily change the size Because you can easily change the color Because you can easily shadow their shape Because they can have transparent knockouts, which work in IE6 unlike alpha transparent pngs. Because you can do all the other stuff image based icons can do, like change opacity or rotate or whatever. You'll be able to do things like add strokes to them with text-stroke or add gradients/textures with background-clip: text; once browser support is a bit deeper.
-prefix-free lets you use only unprefixed CSS properties everywhere. It works behind the scenes, adding the current browser’s prefix to any CSS code, only when it’s needed. The target browser support is IE9+ , Opera 10+ , Firefox 3.5+ , Safari 4+ and Chrome on desktop and Mobile Safari , Android browser , Chrome and Opera Mobile on mobile. If it doesn’t work in any of those, it’s a bug so please report it . Just before you do, please make sure that it’s not because the browser doesn’t support a CSS3 feature at all, even with a prefix. In older browsers like IE8, nothing will break, just properties won’t get prefixed.
background: #1e5799; /* Old browsers */ background: -moz-linear-gradient(top, #1e5799 0%, #2989d8 50%, #207cca 51%, #7db9e8 100%); /* FF3.6+ */ background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#1e5799), color-stop(50%,#2989d8), color-stop(51%,#207cca), color-stop(100%,#7db9e8)); /* Chrome,Safari4+ */ background: -webkit-linear-gradient(top, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%); /* Chrome10+,Safari5.1+ */ background: -o-linear-gradient(top, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%); /* Opera 11.10+ */ background: -ms-linear-gradient(top, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%); /* IE10+ */