a.next {
  padding-top: 10px;
}
a.next span {
  position: absolute;
  bottom: 20%;
  left: 50%;
  width: 55px;
  height: 55px;
  margin-left: -23px;
  border: 1px solid #fff;
  border-radius: 100%;
  box-sizing: border-box;
  z-index:999;
}



a.next span::after {
  position: absolute;
  top: 50%;
  left: 50%;
  content: '';
  width: 16px;
  height: 16px;
  margin: -12px 0 0 -8px;
  border-left: 1px solid #fff;
  border-bottom: 1px solid #fff;
  -webkit-transform: rotate(-45deg);
  transform: rotate(-45deg);
  box-sizing: border-box;
}
a.next span::before {
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
  content: '';
  width: 53px;
  height: 53px;
  box-shadow: 0 0 0 0 rgba(255,255,255,.1);
  border-radius: 100%;
  opacity: 0;
  -webkit-animation: sdb 3s infinite;
  animation: sdb 3s infinite;
  box-sizing: border-box;
}
@-webkit-keyframes sdb {
  0% {
    opacity: 0;
  }
  30% {
    opacity: 1;
  }
  60% {
    box-shadow: 0 0 0 60px rgba(255,255,255,.1);
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}
@keyframes sdb {
  0% {
    opacity: 0;
  }
  30% {
    opacity: 1;
  }
  60% {
    box-shadow: 0 0 0 60px rgba(255,255,255,.1);
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}