.anw-to-the-top {
  position: fixed;
  z-index: 100;
  right: 0;
  bottom: 15px;
  width: 60px;
  height: 60px;
  margin: 10px;
  opacity: 0;
  background-color: rgba(255,255,255,.6);
  box-shadow: 0 0 7px 1px rgba(0,0,0,.4);
  border-radius: 50%;
  text-align: center;
  transition: opacity .4s ease-in-out,bottom .4s ease-in-out
}
.anw-to-the-top.open {
  opacity: 1;
  cursor: pointer
}
.anw-to-the-top i {
  margin-top: 17px;
  color: #e95d0f;
  font-size: 24px
}