font-style

<xs:attribute name="font-style">
  <xs:simpleType>
    <xs:restriction base="xs:token">
      <xs:enumeration value="normal"/>
      <xs:enumeration value="italic"/>
      <xs:enumeration value="oblique"/>
      <xs:enumeration value="backslant"/>
    </xs:restriction>
  </xs:simpleType>
</xs:attribute>