Sets how the browser should render whitespace (extra character spaces and carriage returns) that is part of the element's source code. Under normal circumstances, HTML ignores extra whitespace and thus collapses the rendered content around such space. For example, only single spaces are preserved between words and BR elements are required to force a line break within a paragraph. A whitespace attribute setting of pre treats whitespace as if you had surrounded the element in a PRE element. But although browsers have a tradition of rendering PRE elements in a monospace font, the look of an ordinary element set to white-space:pre preserves its font characteristics.