.list-checked {
  animation: listGrayout 0.2s;
  animation-fill-mode: forwards;
}

@keyframes heartBlast {
  0% {
    background-position: left;
  }
  100% {
    background-position: right;
  }
}

@keyframes listGrayout {
  0% {
    background: #FFF;
    color: #333333;
    text-decoration: none;
  }
  50% {
    background: #FFF;
    color: #333333;
    text-decoration: none;
  }
  100% {
    background: #F0F0F0;
    text-decoration-style: solid;
    text-decoration-color: #333333;
    color: #999;
  }
}