.arrow{
  position: absolute;
  top: 95%;
  left: 50%;
  transform: translate(-50%,-50%);
  z-index: 10;
}
.arrow span{
  display: block;
  width: 30px;
  height: 30px;
  border-bottom: 5px solid #06A8FF;
  border-right: 5px solid #06A8FF;
  transform: rotate(45deg);
  margin: -10px;
  animation: animate 2s infinite;
}
.arrow span:nth-child(2){
  animation-delay: -0.2s;
}
.arrow span:nth-child(3){
  animation-delay: -0.4s;
}
@keyframes animate {
  0%{
      opacity: 0;
      transform: rotate(45deg) translate(-20px,-20px);
  }
  50%{
      opacity: 1;
  }
  100%{
      opacity: 0;
      transform: rotate(45deg) translate(20px,20px);
  }
}