.scroll-to-top {
  width: 50px;
  height: 50px;
  text-align: center;
  font-weight: bold;
  text-decoration: none;
  position: fixed;
  bottom: 40px;
  right: 40px;
  display: none;
  z-index: 2000;
  border-radius: 8px;
  background-color: rgba(22, 124, 128, 0.79);
  -webkit-transition: -webkit-transform 0.3s;
  transition: -webkit-transform 0.3s;
  transition: transform 0.3s;
  transition: transform 0.3s, -webkit-transform 0.3s;
  overflow: hidden;
}
.scroll-to-top:before, .scroll-to-top:after {
  content: '';
  position: absolute;
  display: block;
  top: 15px;
  background-color: #fff;
  height: 20px;
  width: 5px;
}
.scroll-to-top:before {
  -webkit-transform: rotate(-45deg);
          transform: rotate(-45deg);
  left: 28px;
}
.scroll-to-top:after {
  -webkit-transform: rotate(45deg);
          transform: rotate(45deg);
  right: 28px;
}
.scroll-to-top:focus {
  outline: none;
}