How can I use two pop-up modules with different background on the "ONEPAGE"? Currently the portfolio pop-up module’s class suffix is "portfolio section3". Is there any other module class suffix I can use to assign a different background picture? For example, in addition to "my portfolio", I created another pop-up module called ACTIVE LISTING. How can I assign a different background image for it? Thanks.
You have to define your own suffix with help of the suffix you are using
The other suffix present but it work for each different theme so you can use defined own module suffix in custom.css file and use them any of the module.