style for arrow up

style.scss

.up-arrow {
  position: fixed;
  background-color: $darkGray;
  width: 60px;
  height: 60px;
  text-align: center;
  font-size: 24px;
  color: #fff;
  line-height: 60px;
  -webkit-transition: all 0.2s linear;
  transition: all 0.2s linear;
  bottom: 20px;
  right: -200px;
  border-radius: 50%;
  cursor: pointer;
  // animation-delay: 5s;
  -webkit-animation: bounce-bottom 2s infinite;
  animation: bounce-bottom 2s infinite;
  &:hover {
    background-color: $red;
  }
  &.active {
    right: 20px;
    -webkit-animation: bounce-top 2s;
    animation: bounce-top 2s;
  }
}

@-webkit-keyframes bounce-top {
  0% {
    -webkit-transform: translateY(-45px);
    transform: translateY(-45px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
    opacity: 1;
  }
  24% {
    opacity: 1;
  }
  40% {
    -webkit-transform: translateY(-24px);
    transform: translateY(-24px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  65% {
    -webkit-transform: translateY(-12px);
    transform: translateY(-12px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  82% {
    -webkit-transform: translateY(-6px);
    transform: translateY(-6px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  93% {
    -webkit-transform: translateY(-4px);
    transform: translateY(-4px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  25%,
  55%,
  75%,
  87% {
    -webkit-transform: translateY(0px);
    transform: translateY(0px);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
  100% {
    -webkit-transform: translateY(0px);
    transform: translateY(0px);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
    opacity: 1;
  }
}

@keyframes bounce-top {
  0% {
    -webkit-transform: translateY(-45px);
    transform: translateY(-45px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
    opacity: 1;
  }
  24% {
    opacity: 1;
  }
  40% {
    -webkit-transform: translateY(-24px);
    transform: translateY(-24px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  65% {
    -webkit-transform: translateY(-12px);
    transform: translateY(-12px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  82% {
    -webkit-transform: translateY(-6px);
    transform: translateY(-6px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  93% {
    -webkit-transform: translateY(-4px);
    transform: translateY(-4px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  25%,
  55%,
  75%,
  87% {
    -webkit-transform: translateY(0px);
    transform: translateY(0px);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
  100% {
    -webkit-transform: translateY(0px);
    transform: translateY(0px);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
    opacity: 1;
  }
}

@-webkit-keyframes bounce-bottom {
  0% {
    -webkit-transform: translateY(4px);
    transform: translateY(4px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
    opacity: 1;
  }
  24% {
    opacity: 1;
  }
  40% {
    -webkit-transform: translateY(6px);
    transform: translateY(6px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  65% {
    -webkit-transform: translateY(12px);
    transform: translateY(12px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  85% {
    -webkit-transform: translateY(6px);
    transform: translateY(6px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  25%,
  55%,
  75%,
  87%,
  95%,
  99% {
    -webkit-transform: translateY(0px);
    transform: translateY(0px);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
  100% {
    -webkit-transform: translateY(0px);
    transform: translateY(0px);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
    opacity: 1;
  }
}

@keyframes bounce-bottom {
  0% {
    -webkit-transform: translateY(4px);
    transform: translateY(4px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
    opacity: 1;
  }
  24% {
    opacity: 1;
  }
  40% {
    -webkit-transform: translateY(6px);
    transform: translateY(6px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  65% {
    -webkit-transform: translateY(12px);
    transform: translateY(12px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  85% {
    -webkit-transform: translateY(6px);
    transform: translateY(6px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  25%,
  55%,
  75%,
  87%,
  95%,
  99% {
    -webkit-transform: translateY(0px);
    transform: translateY(0px);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
  100% {
    -webkit-transform: translateY(0px);
    transform: translateY(0px);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
    opacity: 1;
  }
}