body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  background-image: url('./封面.png');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.password-container {
  text-align: center;
  background-color: rgba(255, 255, 255, 0.9);
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h2 {
  margin-bottom: 20px;
  color: #007bff;
  font-size: 24px;
}

input[type="password"] {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}

input[type="text"] {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}


button {
  padding: 10px 20px;
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  margin-top: 10px;
  transition: background-color 0.2s ease;
}

button:hover {
  background-color: #0056b3;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.password-container {
  animation: fadeIn 1s ease;
}