Get it here.
Just as the name suggest, it’s an tool which can be used to copy CSS from other websites so you don’t need to open the inspector to learn how something it’s actually coded. Just click and element and copy it’s css.
First you need to pay for it at https://gumroad.com/l/cssscan antd then you have to install the extension for your desired browser. Currently there are only extensions for Chrome and Firefox, but an extension for Safari will be released.
If you enjoy developing websites and don’t like to create CSS styles, this tool will make you smile and improve your work.