== Why is this an issue? CSS allows duplicate property names but only the last instance of a duplicated name determines the actual value that will be used for it. Therefore, changing values of other occurrences of a duplicated name will have no effect and may cause misunderstandings and bugs. This rule ignores ``++$sass++``, ``++@less++``, and ``++var(--custom-property)++`` variable syntaxes. === Noncompliant code example [source,css] ---- a { color: pink; background: orange; color: orange } ---- === Compliant solution [source,css] ---- a { color: pink; background: orange } ---- ifdef::env-github,rspecator-view[] ''' == Implementation Specification (visible only on this page) === Message Remove XXX, it is duplicated. === Parameters .ignoreFallbacks **** ---- true ---- Ignore consecutive duplicated properties with different values. **** === Highlighting The duplicated property endif::env-github,rspecator-view[]