While You Weren't Looking, CSS Gradients Got Better | CSS-Tricks

One thing that caught my eye on the list of features for Lea Verou's conic-gradient() polyfill was the last item: Supports double position syntax (two positions for the same color stop, as a shortcut for two consecutive color stops with the same color) Surprisingly, I recently discovered most people aren't even aware that double position for gradient stops is something that actually exists in the spec, so I decided to write about it.