.popup{
  width: 400px;
  background: #fff;
  border-radius: 6px;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%,-50%) scale(0.1);  
  text-align: center;
  padding: 20px 30px 30px;
  color: #333;
  visibility: hidden;
  transition: transform 0.4s, top 0.4s;
}
.popup img{
  width: 100px;
  margin-top: -50px;
  border-radius: 50%;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}
.popup h2{
  font-size: 38px;
  font-weight: 500;
  margin: 30px 0 10px;
}
.popup button{
  width: 100%;
  margin-top: 50px;
  padding: 10px 0;
  background: #6fd649;
  color: #fff;
}

.open-popup{
    visibility: visible;
    top: 50%;
    transform: translate(-50%,-50%) scale(1); 
}