Specify lowercase or uppercase for pseudo-element selectors.
a::before {}
/** ↑
* This is pseudo-element selector */
string
: "lower"|"upper"
The following patterns are considered violations:
a:Before {}
a:bEfOrE {}
a:BEFORE {}
a::Before {}
a::bEfOrE {}
a::BEFORE {}
input::-MOZ-PLACEHOLDER {}
The following patterns are not considered violations:
a:before {}
a::before {}
input::-moz-placeholder {}
The following patterns are considered violations:
a:Before {}
a:bEfOrE {}
a:BEFORE {}
a::Before {}
a::bEfOrE {}
a::before {}
input::-moz-placeholder {}
The following patterns are not considered violations:
a:BEFORE {}
a::BEFORE {}
input::-MOZ-PLACEHOLDER {}