Duplication of selectors might indicate a copy-paste mistake. The rule detects the following kinds of duplications:
- within a list of selectors in a single rule set
- for duplicated selectors in different rule sets within a single stylesheet.
Noncompliant Code Example
.foo, .bar, .foo { ... } /* Noncompliant */
.class1 { ... }
.class1 { ... } /* Noncompliant */
Compliant Solution
.foo, .bar { ... }
.class1 { ... }
.class2 { ... }
