CSS File Edit

Ideas
1

Hi, in the CSS-Code we can use something like this:

header {
  height:400px;
  background:url(/backgrounds/background_1.jpg) no-repeat center;
  background-size:cover;
}

it would be great if we can Drag-And-Drop the images directly into the url( ... )

or if an file dialog appears.

now we poor people have to type the whole folder and filename by hand... :)