There's a cheat sheet for that

[mikmik]

It's called DevCheatSheets.

This site not only has cheat sheets for webDev - CSS, Html, Javascript, etcetera - programming - Java, c#, COBOL(!), etcetera - AND social networking, libraries, IDE's, frameworks, applications/programs, etcetera - but there are multiple cheat sheets for each. CSS, for example: CSS Quick Reference Sheet, CSS Crib Sheet, CSS2 Help Sheet, CSS Infos, CSS Color Chart, CSS Shorthand Cheat Sheet, My CSS 2 Cheat Sheet, Web Browser CSS Support, Rosetta Stone and Cookbook for XPath, CSS, DOM, and Selenium....
That's not even looking at the CSS3 page, LOL!

Hardware, codecs, cloud computing.... If it has to do with computers or IT, there's(at least 1) a cheat sheet.

(I didn't know if I should post here, or the Breakroom. Lots of places, actually)

[Elev8uk]

The site just times out so I assume it's dead.
Shame because it's been a while since I updated my cheatsheets :\

[weegillis]

The comment on a 2010 GigaOm article about DecCheatSheet pointed to QuicklyCode.

[TrafficProducer]

Is it off-line DevCheatSheets? 502 bad gateway

[mikmik]

It's working now. That Quickly Code is fantastic, weegillis!

[TrafficProducer]

It's working now. That Quickly Code is fantastic, weegillis!

Great Help, tips and code to use, thanks

Will link asap at A Computer Portal