6th Jan 2011
Based on the tags from this post.
This looks like a promising resource for help on implementing new CSS3 stuff: CSS3.info [...]
CSS3 Selectors - is your browser compatible?
Interesting idea - CSS3.info have produced a test to see how forward-thinking your browser is in terms of supporting a bunch of CSS3 selectors. [...]
Opera Mini Simulator
This demo simulator for Opera Mini works a treat. [...]
Pretty handy wee program for checking some basic information about your web page, like total size (including images) to download, if you have meta i [...]