BlenderCss provides a java toolset that compiles css from different supersets of css together.
'com.github.stefanliebenberg:blender-css:1.0'
<dependency>
<groupId>com.github.stefanliebenberg</groupId>
<artifactId>blender-css</artifactId>
<version>1.0</version>
</dependency>
<dependency org="com.github.stefanliebenberg" name="blender-css" rev="1.0"/>
"com.github.stefanliebenberg", "blender-css", "1.0"