div.redAnim {
  animation: 5s infinite bgcolorchange;
}
@keyframes bgcolorchange {
  0% {
    background-color: #e61616;
  }
  50% {
    background-color: #9c2323;
  }
  100% {
    background-color: #e61616;
  }
}
@-webkit-keyframes bgcolorchange {
  0% {
    background: #e61616;
  }
  50% {
    background: #9c2323;
  }
  100% {
    background: #e61616;
  }
}