I want to do a Full Screen slider on my homepage like this site: https://desenio.de/
but everytime i insert a picture the section i want to show is outside the lines: https://prnt.sc/mrfzfj (Mobile)
How can i adjust the picture so it will be shown completly?
If you added image as the slider background you can manage slider bg size from the Source settings http://prntscr.com/mrg9ix but there is no option to change these setting for the mobile devices only, these options are global options. If you want to get the full-screen slider and to cover the slide area your image will be resized and cropped according to the visible area to cover it. If you want to show full image then choose the contain instead or cover but then you’ll get the white space if the slider size is bigger than proportionally resized image.