The second shadow will overlay the first shadow effect, and it will be yellow, blurred, and placed to the left and below the text. The third shadow effect will be placed to the right and above the text. This property is not defined in CSS1. Values may be negative, but there may be implementation-specific limits. User agents may not further increase or decrease the inter-character space in order to justify text.
Character spacing algorithms are user agent-dependent.
When the resultant space between two characters is not the same as the default space, user agents should not use ligatures. Conforming user agents may consider the value of the 'letter-spacing' property to be 'normal'. 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.