Hello friends! 
I'm developing some HMI's for use in roboguide. However, in my programming logic, it would be ideal if one function overlaps another functionally (a button on top of a light bulb). For that I need to make it invisible (transparent), but I don't know if it's possible by color coding or if there is some other way in the HTML code. Can anybody help me?
Thank you very much in advance. 
