One transparency value to rule them all, with CSS <code>alpha()</code> 0 ▲ Patrick Brosset 1 hour ago · Tech · hide The CSS alpha() function is now Baseline Newly available, so all 3 major browser engines support it, e.g. alpha(from red / 0.5). This fake OS uses it to drive a bunch of borders, backgrounds, and shadows that all react to the same transparency value in different ways. Commenting on Bubbles has been removed. Why? If you want to talk about this post, write to the author, use the comments on their blog if it has them, or reply with a "RE:" post on your own blog. Suggestions? feedback@bubbles.town