#scroll {
  position: absolute;
  bottom: 0px;
  left: 50%;
  z-index: 2;
  display: inline-block;
  -webkit-transform: translate3d(-50%, -50%, 0);
  transform: translate3d(-50%, -50%, 0);
  text-decoration: none;
  padding-top: 70px;
  color: #eee;
  opacity: 1;
}
#scroll:hover{
  opacity: .5;
}
#scroll i{
  -webkit-animation: sdb 2s infinite;
  animation: sdb 2s infinite;
  -webkit-animation-delay: .35s;
  animation-delay: .35s;
  font-style: normal;
}
#scroll span {
  position: absolute;
  top: 0;
  left: 50%;
  width: 24px;
  height: 24px;
  margin-left: -12px;
  border-left: 1px solid #eee;
  border-bottom: 1px solid #eee;
  -webkit-transform: rotate(-45deg);
  transform: rotate(-45deg);
  -webkit-animation: sdb 2s infinite;
  animation: sdb 2s infinite;
  opacity: 0;
  box-sizing: border-box;
}
#scroll span:nth-of-type(1) {
  -webkit-animation-delay: 0s;
  animation-delay: 0s;
}
#scroll span:nth-of-type(2) {
  top: 16px;
  -webkit-animation-delay: .15s;
  animation-delay: .15s;
}
#scroll span:nth-of-type(3) {
  top: 32px;
  -webkit-animation-delay: .3s;
  animation-delay: .3s;
}
@-webkit-keyframes sdb {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
@keyframes sdb {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

@media screen and (max-width:750px){
  #scroll{
    bottom: -25px;
    padding-top: 60px;
  }
  #scroll i{
    -webkit-animation: sdb 2s infinite;
    animation: sdb 2s infinite;
    -webkit-animation-delay: .8s;
    animation-delay: .8s;
    font-size: 14px;
  }
  #scroll span{
    width: 20px;
    height: 20px;
    margin-left: -10px;
  }
  #scroll span:nth-of-type(1) {
    -webkit-animation-delay: 0s;
    animation-delay: 0s;
  }
  #scroll span:nth-of-type(2) {
    top: 16px;
    -webkit-animation-delay: .3s;
    animation-delay: .3s;
  }
  #scroll span:nth-of-type(3) {
    top: 32px;
    -webkit-animation-delay: .6s;
    animation-delay: .6s;
  }
}
@media screen and (max-width:750px) and (orientation:landscape) {
  #scroll{
    display: none;
  }
}