body 
{
  background-color: #FFFFF0;
  color: #000000;
  text-align:center;
}
:link { color: #A00000 }
:visited { color: #000000 }
h1 {text-align: center; font-weight: bold; font-size: 2.5em; }
h2 {text-align: center; }
h3 {text-align: center; }
img 
{
  border: 0;
}
img.center
{
  display: block;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
p { text-align: justify; }
p.center
{
  text-align: center;
}
p.imgtitle
{
  text-align: center;
  font-style: italic;  
}
table.tutorials
{
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
td
{
    text-align: center;
    border-color: #006600;
    border-width: 3;
    border-style: double;
    padding: 0.5em;
}