/* https://code.sololearn.com/Wv54364U2VCg/#html */
@keyframes argh-my-eyes {
    0%   { background-color: #f60; }
    49% { background-color: #f60; }
    50% { background-color: #f1f1f1; }
    99% { background-color: #f1f1f1; }
    100% { background-color: #f60; }
}
.blink-bg{
  animation:         argh-my-eyes .5s 3;
}