Need help applying cross-browser compatible CSS animation

I was recently asked to add some kind of pulsing animation type of effect to some icons on a Real Estate site that I've been maintaining, as the client felt that the icons weren't noticeable enough and that we needed to find a way to make them stand out more.  Although I was pleased with the end result, I was disappointed to learn that the animation does not work in Microsoft Edge, Internet Explorer 11, or Safari.  Currently, it appears to only be working in Firefox, Chrome, and Opera.  

You can see an example of the animation effect that I applied on this page (just be sure to use either Firefox, Chrome or Opera):

https://staging.royalpalm.com/property/1900-royal-palm-way/

This effect was achieved with this relatively simple CSS code snippet:

.single-property ul.media-tabs-list li:nth-child(1) a { 
	animation: pulse1 2s infinite;
	animation-delay:0ms;
}

.single-property ul.media-tabs-list li:nth-child(2) a { 
	animation: pulse2 2s infinite;
	animation-delay:250ms;
}

.single-property ul.media-tabs-list li:nth-child(3) a { 
	animation: pulse3 2s infinite;
	animation-delay:500ms;
}

@keyframes pulse1 {
  0% {
    background: rgba(0, 0, 0, 0.6);
  }
  50% {
    background: rgb(0,174,239, 1);

  }
  100% {
    background: rgba(0, 0, 0, 0.6);
  }	
}

@keyframes pulse2 {
  0% {
    background: rgba(0, 0, 0, 0.6);
  }
  50% {
    background: rgb(0,174,239, 1);
  }
  100% {
    background: rgba(0, 0, 0, 0.6);
  }	
}

@keyframes pulse3 {
  0% {
    background: rgba(0, 0, 0, 0.6);
  }
  50% {
    background: rgb(0,174,239, 1);
  }
  100% {
    background: rgba(0, 0, 0, 0.6);
  }	
}

Select allOpen in new window

My question is -- is there anything I can change in my CSS that would make this animation effect work in Edge, IE and Safari? If so, how?  

If this effect simply can NOT be made to work in Edge, IE and Safari, then I'd like to replace my CSS with something that's fully cross-browser compatible and that achieves a similar effect.  It doesn't have to be the same type of effect .. just some other type of animation that makes the icons more obvious somehow.  Please advise.

Thanks,
- Yvan