body {
  margin: 0;
  font-family: 'Roboto', sans-serif;
  background-color: #f5f5f5;
  color: #333;
}

header, main, footer {
  text-align: center;
  padding: 20px;
  opacity: 0;
}

header {
  background-color: #3498db;
  color: #fff;
}

main {
  margin: 20px auto;
}

.container {
  background-color: #fff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
  animation: growIn 0.8s ease-out;
}

input, textarea {
  width: calc(100% - 22px);
  padding: 10px;
  margin: 8px 0;
  border: 1px solid #ccc;
  border-radius: 5px;
}

textarea {
  height: 150px;
}

button {
  background-color: #3498db;
  color: #fff;
  border: none;
  border-radius: 5px;
  padding: 10px 20px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #2980b9;
}

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

@keyframes growIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}