body {
   color: #000000;
   background-color: #ffffff;
   background-image: url("imagenes/fondo.png");
   background-repeat: repeat-y;
   background-position: top left;
   margin-top: 0px;
   margin-left:0px;
   padding-top: 0px;
   padding-left:0px;
   font-style: normal;
   font-weight: normal;
   font-size: 12px;
   line-height: normal;
   font-family: Verdana, Arial, Helvetica, sans-serif;
   text-decoration: none;
   }
   
div,p,th,td,li,dd {
   color: #000000;
   /* background-color: transparent; sale negro en Mac NN4 */
   font-style: normal;
   font-weight: normal;
   font-size: 12px;
   line-height: normal;
   font-family: Verdana, Arial, Helvetica, sans-serif;
   text-decoration: none;
   }
   
h1 {
   color: #ff7700;
   background-color: black;
   width: 100%;
   border: none;
   padding: 3px;
   font-style: normal;
   font-weight: bold;
   font-size: 18px;
   line-height: normal;
   font-family: Verdana, Arial, Helvetica, sans-serif;
   text-decoration: none;
   }
   
h2 {
   color: #ff7700;
   background-color: black;
   width: 100%;
   border: none;
   padding: 3px;   
   font-style: normal;
   font-weight: bold;
   font-size: 16px;
   line-height: normal;
   font-family: Verdana, Arial, Helvetica, sans-serif;
   text-decoration: none;
   } 
   
   
h3 {
   color: #ff7700;
   background-color: transparent;
   font-style: normal;
   font-weight: bold;
   font-size: 16px;
   line-height: normal;
   font-family: Verdana, Arial, Helvetica, sans-serif;
   text-decoration: none;
   } 

a {
   color: #000000;
   background-color: transparent;
   font-style: normal;
   font-weight: bold;
   font-size: 12px;
   line-height: normal;
   font-family: Verdana, Arial, Helvetica, sans-serif;
   text-decoration: none;
   }

a:hover {
   color: #ff7700;
   background-color: transparent;
   font-style: normal;
   font-weight: bold;
   font-size: 12px;
   line-height: normal;
   font-family: Verdana, Arial, Helvetica, sans-serif;
   text-decoration: underline;
   }
   
img {
   border-width: 0;
   }

strong {
   color: #004ea4;
   background-color: transparent;
   font-style: normal;
   font-weight: bold;
   font-size: 12px;
   line-height: normal;
   font-family: Verdana, Arial, Helvetica, sans-serif;
   text-decoration: none;
   }  

a.colizq {
   font-size: 10px;
   }

a.colizq:hover {
   font-size: 10px;
   }

td.colder {
   font-size: 10px;
}

code {
   color: #000000;
   background-color: #cccccc;
   font-style: normal;
   font-weight: normal;
   font-size: 12px;
   line-height: normal;
   font-family: "Courier New", Courier, mono, monospace;
   text-decoration: none;
   }

.ejemplo {
   padding: 6px; 
   margin: 12px;
   background-color: #cccccc;
   }

.centered {
   text-align: center;
}