with the following property, value range [0, 1]
- opacity, control all area opacity
- border-opacity, control border area opacity
- outline-opacity, control outline area opacity
- recolor-opacity, control recolor opacity
- shadow-opacity, control shadow area opacity
const style = { "opacity": 0.2, "img-opacity": 0.5, "border-opacity": 0.7, "outline-opacity": 0, "recolor-opacity": 1 }