.gototop {
  display: none;
  -webkit-animation: hide 350ms ease-out forwards 1;
  animation: hide 350ms ease-out forwards 1;
  padding: 8px 6px;
  border: 0;
  text-align: center;
  background-color:#D5D6E2;
  color: #494A5F;
  position: fixed;
  bottom: 16px;
  right: 30px;
  -webkit-transition: background-color 100ms ease-in-out;
  transition: background-color 100ms ease-in-out;
}
.gototop > span {
  writing-mode: vertical-rl;
  width: 15px;
  display: inline-block;
  -webkit-transition: transform 100ms 100ms ease-in-out;
  transition: transform 100ms 100ms ease-in-out;
}
.gototop:hover,
.gototop:focus {
  background-color:#D5D6E2;
}
.gototop:hover > span,
.gototop:focus > span {
  /*-webkit-transform: translateY(-2px);*/
  /*transform: translateY(-2px);*/
}
.isvisible {
  -webkit-animation: show 1s ease-out forwards 1;
  animation: show 1s ease-out forwards 1;
}

@-webkit-keyframes hide{
  0% {
    opacity: 1;
    -webkit-transform:translateY(0);
  }
  25%{
    opacity: .5;
    -webkit-transform: rotate(-3deg) translateY(-40px);
  }
  75%{
    -webkit-transform: rotate(3deg);
  }
  100%{
    opacity: 0;
    -webkit-transform:translateY(100px);
  }
}
@keyframes hide{
  0% {
    opacity: 1;
    transform:translateY(0);
  }
  25%{
    opacity: .5;
    transform: rotate(-3deg) translateY(-40px);
  }
  75%{
    transform: rotate(3deg);
  }
  100%{
    opacity: 0;
    transform:translateY(100px);
  }
}

@-webkit-keyframes show{
  0% {
    -webkit-transform: rotate(0deg);
  }
  25%{
    opacity: .5;
    -webkit-transform: rotate(-3deg) translateY(-40px);
  }
  75%{
    -webkit-transform: rotate(3deg);
  }
  100%{
    opacity: 1;
    -webkit-transform: rotate(0deg);
  }
}

@keyframes show{
  0% {
    transform: rotate(0deg);
  }
  25%{
    opacity: .5;
    transform: rotate(-3deg) translateY(-40px);
  }
  75%{
    transform: rotate(3deg);
  }
  100%{
    opacity: 1;
    transform: rotate(0deg);
  }
}