White space is the empty spaces in a design. White space is used to separate disparate design elements and group similar ones. White space is the lack of graphics or text in the layout.
White space is not always “white” — it is the empty parts of the page, but if the page has a different background color that will be the color of the white space.
White Space Characters
In HTML there are several characters that create white space. They are: a space, a tab, and a carriage return (or linefeed).