num opacity

Source 

@DomName('CompositorProxy.opacity')
@DocsEditable()
@Experimental() // untriaged
num get opacity => _blink.BlinkCompositorProxy.instance.opacity_Getter_(this);
void opacity=(num value)

Source 

@DomName('CompositorProxy.opacity')
@DocsEditable()
@Experimental() // untriaged
set opacity(num value) =>
    _blink.BlinkCompositorProxy.instance.opacity_Setter_(this, value);