#platform {
  width: 200px;
  height: 350px;
  background-color: #94d88bf2;
  border-radius: 16px;
  box-shadow: 1px 2px 10px rgba(0, 0, 0, 0.95),
    44px 44px 24px rgba(0, 0, 0, 0.25);
  transition: 0.5s ease-in-out box-shadow;
}
#platform:hover {
  box-shadow: 1px 2px 10px rgba(0, 0, 0, 0.95),
    70px 70px 24px rgba(0, 0, 0, 0.15);
}

body{
  background-color: lightyellow;
}