Even though you may know CSS very well and for some tasks it would take a lot of time to complete and for this there are lots of tools available using which you can complete your projects quicker. Here are some list of tools, which will make your work easier. Don't forget we are here to help our design community which will grow to a newer heights.
SelectorGadget is an open source bookmarklet that makes CSS selector generation and discovery on complicated sites a breeze. Just drag the bookmarklet to your bookmark bar, then go to any page and press it. A box will open in the bottom right of the website. Click on a page element that you would like your selector to match (it will turn green). SelectorGadget will then generate a minimal CSS selector for that element, and will highlight (yellow) everything that is matched by the selector. Now click on a highlighted element to remove it from the selector (red), or click on an unhighlighted element to add it to the selector. Through this process of selection and rejection, SelectorGadget helps you come up with the perfect CSS selector for your needs.
CSS3 generator will allow you to create virtually every CSS3 feature : gradients, shadows, box radius, font-face, transitions, animations. But, unfortunately, in spite of its great usefulness it has one big problem since all the popular CSS3 properties have multiple browser-specific implementations.