// Addresses font sizes and margins set differently in IE6/7.
// Addresses font sizes within `section` and `article` in FF4+, Chrome, S5.

h1
  font-size: 2em
  margin: 0.67em 0

h2
  font-size: 1.5em
  margin: 0.83em 0

h3
  font-size: 1.17em
  margin: 1em 0

h4
  font-size: 1em
  margin: 1.33em 0

h5
  font-size: 0.83em
  margin: 1.67em 0

h6
  font-size: 0.75em
  margin: 2.33em 0