Hi guys, I have been asked to design an invitation that is to be sent out via email and viewed online, on screen only. With all the different device sizes, I know there isn't a specific size, but are the any recommendations of a size range to aim for? I have read online that anything between 450-600px wide is the kind of range to go for (by whatever high obviously). I was thinking of setting up my artboard at 550px wide by 750px+ high. Does that sound about right in this day and age? Thanks for any tips!