Ok if you thought coding webpages was hard to begin with coding just now increase a couple of fold. On the other hand way new cool things are now able to happen with just css.
One of the new things is transparency and gradients of backgrounds just in css. This blog post on Webdesigner Depot give a couple of good points about how to program and samples. It gives the example of current css coding for color:
HEX and RGB systems can define the millions of colors available on your screen equally well:
All of these color value settings produce the same result.
What happens with the new CSS is that the RGB tag is now having an “Alpha” feature added that gives a transparency function to the CSS color feature. So now the new CSS tagging will look like this…
background-color: rgba(100%, 0, 0, 0.5)
background-color: rgba(255, 0, 0, 0.5)