CSS Values and Units Module Level 3http://www.w3.org/TR/2013/CR-css3-values-20130730/#viewport-relative-lengths 2.5. Property value examplesBelow are some examples of properties with their corresponding value definition fieldsPropertyValue definition fieldExample value‘orphans’‘3’‘text-align’left | right | center | justify‘center’‘padding-top’ | ‘5%’‘outline-color’ | invert‘#fefefe’‘text-decorat..