CSS Variables with background-image url

Question

Am I misunderstanding the capabilities of css variables? I am trying to pass a background image url to a variable like this: It seems to be working fine when I pass something simple like a color etc...

:root {
  --slide-1: url(/static/images/slideshow/slide1.jpg) ;
  --slide-2: url(/static/images/slideshow/slide2.jpg) ;
  --slide-3: url(/static/images/slideshow/slide3.jpg) ;
  --slide-4: url(/static/images/slideshow/slide4.jpg) ;
  --slide-5: url(/static/images/slideshow/slide5.jpg) ;
}

//and then

.jumbotron > .jumbotron-slideshow:nth-child(1) { 
  background-image: var(--slide-1); 
}

.jumbotron > .jumbotron-slideshow:nth-child(2) {
  animation-delay: 6s;
  background-image: var(--slide-2);
}

.jumbotron > .jumbotron-slideshow:nth-child(3) {
  animation-delay: 12s;
  background-image: var(--slide-3);
}

.jumbotron > .jumbotron-slideshow:nth-child(4) {
  animation-delay: 18s;
  background-image: var(--slide-4);
}

.jumbotron > .jumbotron-slideshow:nth-child(5) {
  animation-delay: 24s;
  background-image: var(--slide-5);
}

Answer 1

This is a bug in Chrome, the code works fine in Firefox.

You'll have to stick with absolute URLs in var() for now.