.poster {
  position: relative;
  width: 600px;
  height: 950px;
  background: white;
  border-radius: 0% 0% 0% 0% / 0% 0% 0% 0%;
  color: white;
  box-shadow: 20px 20px rgba(0, 0, 0, .15);
  border-radius: 0% 0% 50% 50% / 0% 0% 5% 5%;
  transition: all .4s ease;
}

.poster:hover {
  
  box-shadow: 10px 10px rgba(0, 0, 0, .25);
}