invalid
The invalid CSS pseudo-class applies when the element is invalid with respect to data validity semantics.
An element which lacks data validity semantics is neither :valid nor :invalid.
Syntax
selector:invalid {
property: value;
}
The invalid CSS pseudo-class applies when the element is invalid with respect to data validity semantics.
An element which lacks data validity semantics is neither :valid nor :invalid.
selector:invalid {
property: value;
}