Build a Vertical Rhythm For Your Web Typography with Gridlover

Typography is the art / technique of arranging type in order to make language visible. The arrangement of type involves the selection of typefaces, point size, line length, leading (line spacing), adjusting the spaces between groups of letters (tracking) and adjusting the space between pairs of letters (kerning).

Gridlover is a web app for building a vertical rhythm for your web typography. It has interactive sliders and will spit ready-made CSS for you.