body {
  background: blueviolet;
  color: white;
  font-weight: 800;
  font-family: monospace;
  font-size: 12pt;
}

.blink {
    animation-duration: 1s;
    animation-name: blink;
    animation-iteration-count: infinite;
    animation-direction: alternate;
    animation-timing-function: ease-in-out;
}
@keyframes blink {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}