BODY  {   /*font-family: verdana, arial, helvetica, sans-serif;*/
/*text-align: justify;*/
background: url(http://www.exa.unicen.edu.ar/~azunino/bground.jpg); color: black }
/*LI, P, UL, OL {*/
/*  text-align: justify;*/
/*}*/

H1 {
  color: navy;
  text-align: center;
  border: 2pt groove; 
  padding-left: 10%;
  padding-right: 10%;
}

H2 {
  border-bottom-width: 1pt;
/*  color: #442244*/
}

all.footnote {
  font-family: sans-serif;
  font-size: x-small;
}

PRE {
  margin-left: 2 em;
}