css transition opacity fade background

Question

I am doing a transition where it fades into transparent white, when a user is hovering an image.

My problem is that I need to change the color, that it

Answer 1

Wrap your image with a span element with a black background.

.img-wrapper {
  display: inline-block;
  background: #000;
}

.item-fade {
  vertical-align: top;
  transition: opacity 0.3s;
  -webkit-transition: opacity 0.3s;
  opacity: 1;
}

.item-fade:hover {
  opacity: 0.2;
}