body {
  font-family: Arial, sans-serif;
  background-color: #f0f2f5;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.container {
  width: 90%;
  max-width: 800px;
  padding: 20px;
  background-color: #ffffff;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
}

h1 {
  font-size: 24px;
  color: #333333;
  text-align: center;
}

textarea {
  width: 100%;
  height: 200px;
  padding: 10px;
  font-size: 16px;
  border-radius: 5px;
  border: 1px solid #dddddd;
  resize: vertical;
}

.preview, .buttons {
  margin-top: 20px;
}

.buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.button {
  padding: 12px 24px;
  font-size: 14px;
  color: #ffffff;
  background-color: #007bff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.3s;
}

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

.iframe-container {
  width: 100%;
  height: 300px;
  border: 1px solid #dddddd;
  border-radius: 5px;
  overflow: hidden;
}

iframe {
  width: 100%;
  height: 100%;
  border: none;
  }