* {
    font-family: Arial, Helvetica, sans-serif;
    background-color: rgb(230, 224, 218);
  }

  header, nav {
    text-align: center;
    border-bottom: 5px solid brown;
    padding: 12px;
    margin: 12px;
  }

.azul {
  color: blue;
}

.rojo {
  color: red;
}

.cafe {
  color: brown;
}

.centro {
  text-align: center;
  color: brown;
}
  body{
       padding: 15px;
  }

  .tb {
    background: rgb(39, 100, 39);
    color:white;
    text-align: center;
    /*margin: 0px;
    padding-top: 0px;*/
  }

  .visita {
    background: blue;
    color: white;
    text-align: center;
  }
  
  .seamos {
    background: rgb(149, 132, 8);
    color:white;
    text-align: center;
  }

  .vida {
    background: rgb(102, 8, 30);
    color:white;
    text-align: center;
  }

  .tdb{
    color:rgb(39, 100, 39);
  }

  .mm{
    color: rgb(149,132,8);
  }

  .vc{
    color: rgb(102, 8, 30);
  }

  p {
    font-weight: bold;
    margin-bottom: 0;
  }

  i {
    /*color:darkblue;
    font-size: 1.2em;*/
  }
  p i {
    color: blue;
  }

  a{
    text-decoration: none;
  }
  ul {
    list-style-type: none;
    margin: 0;
    padding: 15px;
  }
  nav{
    font-size: 1.5em;
    /*color: brown;*/
    margin: auto;
    
  }
  footer{
    text-align: center;
    border-top: 5px solid brown;
    font-size: 1.5em;
    color: blue;
    margin-top: 2em;
    border-top: 1.5em;
  }

  table, tr, td {
    /*width: auto;
    border: 3px solid black;
    border-collapse: collapse;
    table-layout: fixed;
    margin: 0 10px 0 0;*/
    padding: 0 10px 0 0;
    font-weight: bold;
  }
  li{
    margin-bottom: 1em;
  }

  .sub:hover {
    text-decoration: underline;
    background-color: aqua;
  }
  .btn-regresar {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #333;
    color: aqua;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.btn-regresar:hover {
    background-color: #07eb31;
}