Fancybox3 With IFrame - Prevent Close On Overlay Click

I am using Fancybox3 to open iframe in popup, but I need deny close on click on overlay, because in iframe is form, which user must fill out. I tried edit outsideClick parameter 'c

Solution 1:

Simply use clickSlide option. v3 works as a slider and is highly customizable (for example, you can resize and/or reposition sliding area), therefore there is a seperate options for clicking the slide and overlay element.