The W3C specifications define the valid pseudo-element selectors. Only the official and browser-specific pseudo-element selectors should be used to get the expected impact in the final rendering.
== Noncompliant Code Example
----
a::beforre { /* Noncompliant; there is a typo on the word "before" */
...
}
== Compliant Solution
a::before {
ifdef::env-github,rspecator-view[]
'''
== Implementation Specification
(visible only on this page)
include::message.adoc[]
endif::env-github,rspecator-view[]
