font-size 

The font-size can be one of the CSS font sizes or a numeric point size.

Simple Type Information

Used By

Attribute font/@font-size

Source 

<xs:simpleType name="font-size">
  <xs:annotation>
    <xs:documentation>The font-size can be one of the CSS font sizes or a numeric point size.</xs:documentation>
  </xs:annotation>
  <xs:union memberTypes="xs:decimal css-font-size"/>
</xs:simpleType>