.top-img{
  width:70px;
  cursor:pointer;
  position:fixed;
  right:50px;
  bottom:70px;
}
@media (max-width:1400px){
  .top-img{
    right:4.5vw;
  }
}
@media (max-width:767px){
  .top-img{
    right:1.87vw;
    width:12vw;
  }
}