.back-to-top{
  display:block;
  width:51px;
  height:50px;
  position:fixed;
  z-index:10;
  bottom:90px;
  right:25px;
  background-color:#ffffff;
  border:1px solid #dadada;
  border-radius:5px;
  transition:all 250ms linear;
  opacity:0;
  cursor:pointer;
  pointer-events:none;
}
.back-to-top i{
  display:block;
  font-size:30px;
  position:absolute;
  left:50%;
  top:50%;
  z-index:2;
  transform:translate(-50%,-50%);
  font-weight:900;
  font-style:normal;
  font-family:"Font Awesome 5 Free";
  font-variant:normal;
  text-rendering:auto;
  color:#d8d8d8;
  transition:color 250ms ease;
}
.back-to-top.show{
  opacity:0.65;
  pointer-events:all;
}
.back-to-top.show:hover{
  opacity:1;
}
.back-to-top.show:hover i{
  color:#fda73d;
}

@media (max-width: 700px) {
  .back-to-top {
    right: 15px;
  }
}