body {
  background: linear-gradient(to bottom right, pink, black);
  font-family: 'Helvetica Neue', sans-serif;
  color: white;
  margin: 0;
  padding: 20px;
  animation: fadeIn 2s ease-in-out;
}
.container {
  text-align: center;
  max-width: 600px;
  margin: auto;
}
img {
  width: 100%;
  max-width: 300px;
  margin: 10px auto;
  display: block;
  border-radius: 10px;
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}