The baseline is an invisible line onto which all type characters sit, although of course some characters (including ‘j’, ‘p’, ‘g’ and ‘y’) have descenders that hang below the baseline. Baseline shift involves moving characters up or down in relation to the baseline and using it effectively can make a huge difference to the professional look of your type. Although baseline shift has traditionally been a part of using tools like InDesign or Quark, there are ways to accomplish the same results using today’s CSS…
Direct link: Improve your web typography with baseline shift