body {
  font-family: 'Poppins', sans-serif;
  color: white;
  text-align: center;
  margin: 0;
  height: 100vh;
  background: linear-gradient(120deg, #ff9a9e, #fad0c4);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background 1s ease;
}

header {
  position: absolute;
  top: 15px;
  left: 20px;
  right: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.corner-btn {
  background-color: #ff69b4;
  border: none;
  color: white;
  padding: 10px 15px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 0.9em;
  transition: 0.3s;
}
.corner-btn:hover {
  background-color: #ff1493;
  transform: scale(1.05);
}

.back {
  margin-top: 20px;
}

.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#anime-img, #op-img {
  width: 200px;
  height: auto;
  border-radius: 15px;
  margin-bottom: 15px;
}

button {
  margin-top: 10px;
  background-color: #ff69b4;
  border: none;
  padding: 10px 20px;
  border-radius: 10px;
  color: white;
  cursor: pointer;
  font-size: 1em;
  transition: 0.3s;
}
button:hover {
  background-color: #ff1493;
}

.screen {
  display: none;
}
.screen.active {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}