.scrollTop {
  position: fixed;
  right: 3%;
  bottom: 10px;
  background-color: #007bff;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  opacity: 0;
  transition: all 0.4s ease-in-out 0s;
  z-index: 9999;
  border-radius: 100%;
}
.scrollTop:hover {
  background-color: #17a2b8;
  transition: all 0.1s ease-in-out 0s;
}
.scrollTop i {
  font-size: 18px;
  color: #fff;
}