html {
   width:100%;
   height:100%;
   background:url(ianos.png) center center no-repeat;
}

.footer {
   position: fixed;
   left: 0;
   bottom: 10pt;
   width: 100%;
   text-align: center;
   font-family: sans-serif;
   font-size: 10pt;
   color: gray;
}