They reset the browsers setting, e.g., setting body, div, span's margins and padding to zero.
They setup the typography, picking a global font, setting up font-sizes, margins and padding for html elements such as h1, p, ordered and unored list, etc...
They provide a way of setting up a grid. Blueprint, by default, uses a grid chunked into 40px segments, creating 940px wide design. You then place divs inline or nested to create your design.
Blueprint also provides some extra goodies like defining styles for forms, error and success styles for divs, and some ie fixes.
They reset the browsers setting, e.g., setting body, div, span's margins and padding to zero.
They setup the typography, picking a global font, setting up font-sizes, margins and padding for html elements such as h1, p, ordered and unored list, etc...
They provide a way of setting up a grid. Blueprint, by default, uses a grid chunked into 40px segments, creating 940px wide design. You then place divs inline or nested to create your design.
Blueprint also provides some extra goodies like defining styles for forms, error and success styles for divs, and some ie fixes.