Spaces and tabs
Replace multiple spaces with just one space
Remove space around chars ;:{},
Leave space between selectors (?)
Leave space between properties (?)
Remove tabs

New lines handling
Leave lines as they are
Replace multiple empty lines with just one empty line
Remove all newlines

Comment handling (?)
Don't strip any comments
Strip ALL comments
Strip comments at least chars long

Other options
Compress color codes where possible (?)
Remove unnecessary semi-colons
One command per line (?)

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