How to set the size of your Storefront Pro sliders so they don’t crop (whatever the device)

Here's an article that explains why they crop by default and a solution if you don't want them to crop.

https://www.pootlepress.com/2018/09/how-to-set-the-size-of-your-storefront-pro-sliders-so-they-dont-crop-whatever-the-device/