How to scale an image to cover entire parent div? [duplicate]

http://jsfiddle.net/Log82brL/7/

#img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

object-fit: cover allows the replaced content is sized to maintain its aspect ratio while filling the element’s entire content box: its concrete object size is resolved as a cover constraint against the element’s used width and height.