This value tells the user agent to adjust the spacing between characters so that the entire text of an element fits on one line. See also the 'font-size' property for related 'auto' behavior. Character spacing algorithms are user agent-dependent. This value indicates inter-word space in addition to the default space between words. Values may be negative, but there may be implementation-specific limits.
Word spacing algorithms are user agent-dependent.
In this example, the word-spacing between each word in H1 elements is increased by '1em'. Puts all characters of each word in lowercase. The actual transformation in each case is human language- dependent. In this example, all text in an H1 element is transformed to uppercase text. This value prevents user agents from collapsing sequences of white space.