body {
    font-family: sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: #333;
    background-color: #fff;
  }
  
  header {
    background-color: #000;
    color: #fff;
    padding: 20px 0;
  }
  
  h1 {
    font-size: 36px;
    margin-top: 0;
  }
  
  section {
    padding: 20px 0;
  }
  
  .banner {
    background-image: url("banner.jpg");
    background-size: cover;
    height: 300px;
  }
  
  .sobre-nosotros {
    background-color: #f9f9f9;
  }
  
  .productos {
    background-color: #e9e9e9;
  }
  
  .contacto {
    background-color: #d9d9d9;
  }
  
  a {
    color: #000;
    text-decoration: none;
  }
  
  a:hover {
    text-decoration: underline;
  }
  
  .btn {
    background-color: #000;
    color: #fff;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
  }
  
  .btn:hover {
    background-color: #222;
  }