Using stylesheet.css to make an icon blink

I am using the stylesheet.css to manage my styles, and I want to make an alarm icon blink in the smooth form that the style below allows for. Any ideas how I can make this work using the style sheet? I am using 8.1.45 and am planning to upgrade to 8.3.2 here next week.

@keyframes psc-blinker-anim {
     0%  { fill: #FF0000; }
     100% { fill: #D0D0D0; }
}

.psc-blinker svg path {
     animation-name: psc-blinker-anim;
     animation-duration: 1s;
     animation-iteration-count: infinite;
     animation-direction: alternate;
     animation-timing-function: linear;
}
  • Update to this, when I go from design to runtime it quits working. I have found that the CSS animation is not being applied at runtime, however it would still work on the designer

Check the silly stuff. Use the browser's Developer Tools (F12), find the CSS file and check that your animation class is actually in there. If not, then Ctrl-F5 should reload everything from the site and update the cache.