body {
  margin: 0;
  font-family: "Segoe UI", sans-serif;
  background: #f0f2f5;
  color: #333;
}

.header {
  text-align: center;
  background: #2980b9;
  color: white;
  padding: 40px 20px;
}

.header h1 {
  margin: 0 0 10px 0;
}

.botonera {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 20px;
  flex-wrap: wrap;
}

.botonera button {
  padding: 15px 30px;
  font-size: 16px;
  background-color: #3498db;
  border: none;
  color: white;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

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

.contenido {
  width: 100%;
  height: 80vh;
  padding: 0 20px 20px;
  box-sizing: border-box;
}

iframe {
  width: 100%;
  height: 100%;
  border-radius: 10px;
  border: 1px solid #ccc;
}