canvas { default-points: false; default-lines: false; } area[test=A] { fill-color: green; fill-opacity: 1; } area[test=B] { fill-color: rgba(0.5, 0, 1.0, 0.5); fill-opacity: 1; } area[test=C] { fill-color: red; fill-opacity: .5; } area[test=D] { fill-color: rgba(0.5, 0, 1.0, 0.5); fill-opacity: .5; } area[test=E] { fill-color: blue; fill-opacity: 1; } area[test=F] { fill-color: red; fill-opacity: 1; }