When an element is defined in 'defs', style rules cascade into the defs
subtree.
Where a use element has inherited style rules, these are applied, but if
cascaded style rules apply at the point where the used element is
defined, those rules take priority over the inherited rules.
When an element is defined in 'defs', style rules cascade into the defs subtree.
Where a use element has inherited style rules, these are applied, but if cascaded style rules apply at the point where the used element is defined, those rules take priority over the inherited rules.