From The Developer:
I started divCSSter because I've used a lot of CSS tools, but border-radius was one generator, box-shadow was another, and so on. (one example is cssmatic.com) I wanted to combine most of these into one CSS Tool to make manipulating a single div significantly faster and easier for both desktops, tablets, and smartphone users.
If you like this app you may also want to try My Mobile Design which is a wysiwyg website designer.