* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Segoe UI', sans-serif;
    background-color: #2c3e50;
    color: #333;
  }
  
  #wrap {
    width: 90%;
    max-width: 900px;
    margin: 40px auto;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    overflow: hidden;
  }
  
  header h1 {
    background-color: #2980b9;
    color: white;
    padding: 20px;
    font-size: 1.8rem;
    text-align: center;
  }
  
  #nav {
    display: flex;
    background: #ffffff;
    justify-content: space-around;
    padding: 10px 0;
    list-style: none;
  }
  
  #nav li a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 600;
    padding: 10px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: all 0.3s ease;
  }
  
  #nav li a img {
    width: 40px;
    height: 40px;
    margin-bottom: 5px;
    transition: transform 0.3s ease;
  }
  
  #nav li a:hover {
    background-color: #3498db;
    color: white;
    border-radius: 8px;
  }
  
  #nav li a:hover img {
    transform: scale(1.2);
  }
  
  #contenido {
    padding: 20px 30px;
    line-height: 1.6;
    background: #ecf0f1;
  }