body::after {
content: "";
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: white;
opacity: 0;
pointer-events: none;
animation: oneBigWhiteFlash 8s infinite;
}
@keyframes oneBigWhiteFlash {
/* Flash happens once at a random-ish spot */
0% { opacity: 0; }
/* Random strong flash window */
37% { opacity: 0; }
38% { opacity: 1; } /* BOOM */
39% { opacity: 0; } /* instantly gone */
/* Remainder stays black */
100% { opacity: 0; }
}
⚠️Uh Oh!
Seems like you failed, sore loser!