body {
  background: #123;
  color: #333;
  font-size: 11px;
  height: auto;
  padding-bottom: 20px;
}

a {
  color: #000;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1 {
  font-family: Georgia, serif;
  font-weight: normal;
  padding-top: 20px;
  text-align: center;
}

h2 {
  padding-top: 20px;
  text-align: center;
}

p {
  
  overflow: hidden;
  padding: 10px 0;
  text-align: center;
  font-family: fantasy;
}

.container_12,
.container_16,
.container_24 {
  background-color: #fff;
  background-repeat: repeat-y;
  margin-bottom: 20px;
}
ul { text-align: center; }
li { display: inline-block; }
#navi li a {
  display: inline-block;

  width:100px;
  padding:4px 0;
  text-decoration:none;
  text-align:center;
  font-size:11px;
  color:#FFFFFF;
  background-color:#000000;
  border-left:10px solid #666666;  //Agrego un borde ancho a la izquierda
}
#navi li a:hover {
  color:#FF0000;
  background-color:#003366;
  border-left-color:#FF0000; 
}

.container_12 {
  background-image: url(../img/12_col.gif);
}

.container_16 {
  background-image: url(../img/16_col.gif);
}

.container_24 {
  background-image: url(../img/24_col.gif);
}