hi,

i am learning about making my own block types so i use designer content as a starter but i am struggling to make the following work:

in html there is just an empty <section> with a class off "wallpaper", where
wallpaper refers to a css background image like

background: url (img/wallpaper1.jpg) no-repeat center center #000;
background-size: cover;
height: 350px;

so what i want to do is that the user can change the background image by uploading a new one into the block...

but in Designer Content there is no option for this as it only handles html images...so how can i achieve this?

another question is where i should store the background images..in the themes folder or in the folder where the File Manager is storing the images.

thanks