Code

For multiple lines of code, use the pre element:

Text in a pre element
  is displayed in a fixed-width
  font, and it preserves
  both      spaces and
  line breaks.

If you add the .pre-scrollable class, the pre element gets a max-height of 350px and provides a y-axis scrollbar:

Text in a pre element
  is displayed in a fixed-width
  font, and it preserves
  both      spaces and
  line breaks.