Is it possible to use existing css class as content in another class ?
I mean something like:
Contained in some library: .class1 { text-indent: 100 } I
The best way would be to redeclare class1 just below your custom css ends and override it with the values that you are looking for. This way, the inherited values, that you cannot change + the values that you need to incorporate, both shall apply.
class1