Scales image as needed but Retains image proportions

Hi there,

i tested all options so far, but my background-images are always stretched in different ways as soon as i view on different devices. I need them to scale as needed to cover the whole site, but retains the proportions. Can you please give me an advice how to setup this?

Best regards

Hi Juergen.
Thank you for using our product.
I will note your idea and will update our product this time.
Thank you so much for empathy.