body { 
  font-family: verdana;
 }
img { 
  border: 0;
}
div.header { 
  padding: 4px;
  text-align: center;
  font-size: 26px;
  font-weight: bold;
  font-variant: small-caps; 
  border: 1px solid #ddd;
}
div.center {
  text-align: center;
}
table.container {
  margin: 30px auto;
}
table.dia {
  margin: 5px;
  width: 100px; 
  border: 1px solid #ddd;
}
table.dia td {
    min-height: 133px;
  text-align: center;
  vertical-align: middle;
}
table.dia img { 
  display: block;
  margin: auto; 
}

div.footer {
  margin: 20px;
  text-align: center;
}
table.dia a img { 
  filter:alpha(opacity=80);
  -moz-opacity:0.8;
  opacity: 0.8;
}
table.dia a:hover img { 
  filter:alpha(opacity=100);
  -moz-opacity:1;
  opacity: 1;
}