white-space: pre;

This CSS property defines how white space should be handled within an element.

The value "pre" specifies that whitespace should be preserved and displayed as-is. This means that all whitespace characters, including spaces, tabs, and line breaks, will be displayed exactly as they appear in the HTML code.

For example, if you have the following HTML code:

<p>
    This is some text.
    This is some more text.
</p>

And you apply the CSS `white-space: pre;` to the `p` element, the output will be:

This is some text.
    This is some more text.

Without the `white-space: pre;` property, the output would be:

This is some text. This is some more text.

This property can be useful for displaying code snippets or other content where the exact formatting and spacing is important.