We'll you seem to think they work on Chrome Safari. I develop on Firefox and test on others. From other comments you seem to be a desktop developer now reluctan

We'll you seem to think they work on Chrome Safari. I develop on Firefox and test on others. From other comments you seem to be a desktop developer now reluctantly working on web. Targeting just windows OS would be simpler and easier I agree. But we have moved into multi platform now. Needed to up the skills. That said for native apps be it desktop or mobile using native tools would be the way to go.