syn match cssBoxProp contained "\<overflow-\(style\|x\|y\)\>"
syn match cssBoxProp contained "\<rotation\(-point\)\=\>"
syn keyword cssBoxAttr contained scrollbar panner marquee
syn match cssBoxAttr contained "\<ruby\(-\(base\(-group\)\=\|text\(-group\)\=\)\)\=\>"
syn match cssBoxAttr contained "\<no-\(display\|content\)\>"