Template:User OS:Dos/style.css

/* {{pp-template}} */
blink,
.blink {
	animation: 2s linear infinite blink; 
}

@keyframes blink {
	0%   {
	 	visibility: visible; 
		}
	50%  {
	 	visibility: hidden;
		}
	100% {
		visibility: hidden;
		}
	}
/*
Reference:

https://developer.mozilla.org/en-US/docs/Web/HTML/Element/blink#CSS_Polyfill
*/