Appearance:
white-space: <value>
Possible Values:
normal | pre | nowrap
Initial Value:
normal
Applies to:
Block-level elements
Inherited:
Yes

The white-space property will determine how spaces within the element are treated. This property takes one of three values:

normal (collapses multiple spaces into one)
pre (does not collapse multiple spaces)
nowrap (does not allow line wrapping without a <BR> tag)

Examples:

this is a sentence with a lot of spaces in it to show how the normal value works

this is a sentence with a lot of spaces in it to show how the pre value works