@-webkit-keyframes bounceArrow {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0px);
    opacity: 0.4;
  }
  40% {
    transform: translateY(5px);
    opacity: 0.8;
  }
  60% {
    transform: translateY(10px);
    opacity: 1;
  }
}
@keyframes bounceArrow {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0px);
    opacity: 0.4;
  }
  40% {
    transform: translateY(5px);
    opacity: 0.8;
  }
  60% {
    transform: translateY(10px);
    opacity: 1;
  }
}
* {
  box-sizing: border-box;
}

body {
  background: #1d1f20;
}

.arrow {
  transform: rotate(-90deg);
  transform-origin: bottom left;
  /* margin: 100px auto 0; */
  position: fixed;
  right: 6%;
  top: 60%;
  cursor: pointer;
  align-items: center;
}
.arrow span {
  width: 38px;
  height: 15px;
  -webkit-animation: 2s bounceArrow infinite;
  animation: 2s bounceArrow infinite;
  display: block;
}
.arrow span:first-child {
  padding: 4px 4px 0;
  border-radius: 3px 3px 0 0;
}
.arrow span:last-child {
  padding: 0 4px 4px;
  border-radius: 0 0 3px 3px;
}
.arrow span:after,
.arrow span:before {
  content: "";
  height: 2px;
  background: #fff;
  width: 19px;
  position: absolute;
}
.arrow span:before {
  transform-origin: left;
  transform: rotate(30deg);
  left: 3px;
}
.arrow span:after {
  transform-origin: right;
  transform: rotate(-30deg);
  right: 3px;
}