Install libcssparser-java by entering the following commands in the terminal:
sudo apt update sudo apt install libcssparser-java
Description:
Java CSS2 Parser
The CSS Parser is a Java library, that inputs Cascading Style Sheets Level 2 source text and outputs a Document Object Model Level 2 Style tree. Alternatively, applications can use SAC: The Simple API for CSS. Its purpose is to allow developers working with Java to incorporate Cascading Style Sheet information, primarily in conjunction with XML application developments.
Homepage: http://cssparser.sourceforge.net/
Version: 0.9.5-1
Section: universe/java