text: CSS.AllowTricky
  TYPE: bool
  DEFAULT: false
  VERSION: 3.1.0
  --DESCRIPTION--
  This parameter determines whether or not to allow "tricky" CSS properties and
  values. Tricky CSS properties/values can drastically modify page layout or
  be used for deceptive practices but do not directly constitute a security risk.
  For example, <code>display:none;</code> is considered a tricky property that
  will only be allowed if this directive is set to true.
  --# vim: et sw=4 sts=4
  