About: http://webisa.webdatacommons.org/101518017

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	So, from now on font sizes should always be coded with em but widths are a different matter and should be coded in percent so they will scale to whatever size the display screen is.
http://www.w3.org/ns/prov#wasQuotedFrom	sitepoint.com