.centrar {
  display: flex;
  justify-content: center;
  align-items: flex-start; /* Alinea arriba dentro del contenedor */
  padding-top: 40px; /* Ajusta la distancia desde arriba */
  min-height: 100vh;
  background-color: #f0f0f0;
}


  .contenedor {
    background: #fff;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    max-width: 700px;
    width: 100%;
  }

  h1 {
    font-size: 2em;
    color: #3f51b5;
    text-align: center;
    margin-bottom: 10px;
  }

  h2 {
    color: #3f51b5;
    font-size: 1.3em;
    margin-bottom: 10px;
  }

  section {
    margin-top: 25px;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 12px;
    background-color: #fdfdfd;
  }

  label {
    display: block;
    margin: 15px 0 5px;
    font-weight: 600;
  }

  input, select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 1em;
  }

  .boton {
    background-color: #3f51b5;
    color: white;
    padding: 12px;
    margin-top: 20px;
    width: 100%;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }

  .boton:hover {
    background-color: #303f9f;
  }

  .resultado {
    font-weight: bold;
    color: #333;
  }

  #resultado p {
    margin: 10px 0;
    font-size: 1.1em;
  }

  @media (max-width: 600px) {
    .contenedor {
      padding: 20px;
    }

    h1 {
      font-size: 1.6em;
    }
  }