.icon-scroll,
.icon-scroll:before {
  position: absolute;
  left: 50%; 
}
.icon-scroll {
  width: 35px;
  height: 60px;
  margin-left: -20px;
  bottom: 10%;
  margin-bottom: -25px;
  box-shadow: inset 0 0 0 1px #fff;
  border-radius: 25px;
}
.icon-scroll:before {
  content: '';
  width: 8px;
  height: 8px;
  background: #fff;
  margin-left: -4px;
  top: 8px;
  border-radius: 4px;
  animation-duration: 1.5s;
  animation-iteration-count: infinite;
  animation-name: scroll;
}
@-moz-keyframes scroll {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateY(46px);
  }
}
@-webkit-keyframes scroll {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateY(46px);
  }
}
@-o-keyframes scroll {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateY(46px);
  }
}
@keyframes scroll {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateY(46px);
  }
}