/* CSS Document */
.scr a {
  padding-top: 60px;
  position: absolute;
  font-size: 20px;
  top: calc(76% - 50px /2);
  left: calc(50% - 30px /2);
  width: 30px;
  height: 50px;
  color: #FFFFFF;
  font-weight: 700;
  z-index: 1;
}
.scr a span {
  position: absolute;
  top: 0px;
  left: 50%;
  width: 30px;
  height: 50px;
  margin-left: -7px;
  border: 2px solid #fff;
  border-radius: 50px;
  box-sizing: border-box;
}
.scr a span::before {
  position: absolute;
  top: 10px;
  left: 50%;
  content: '';
  width: 6px;
  height: 6px;
  margin-left: -3px;
  background-color: #fff;
  border-radius: 100%;
  -webkit-animation: sdb 2s infinite;
  animation: sdb 2s infinite;
  box-sizing: border-box;
}
@-webkit-keyframes sdb {
  0% {
    -webkit-transform: translate(0, 0);
    opacity: 0;
  }
  40% {
    opacity: 1;
  }
  80% {
    -webkit-transform: translate(0, 20px);
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}
@keyframes sdb {
  0% {
    transform: translate(0, 0);
    opacity: 0;
  }
  40% {
    opacity: 1;
  }
  80% {
    transform: translate(0, 20px);
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}