body {
  font-family: sans-serif;
  color: black; 
  background: #ffffcc url(images/sbbg.jpg) repeat;
}
td.def {
  color: black;
  background: #FFFFFF;
  text-align: justify;
  font-size: small;
  font-family: sans-serif;
}
td.introduction {
  color: black;
  background: #ffc2a5;
  text-align: center;
  font-size: small;
  font-family: sans-serif;
}
td.normal {
  color: black;
  background: #ffffcc;
  font-size: small;
  font-family: sans-serif;
}
td.tnt {
  color: #ffffff;
  background: black;
  font-family: sans-serif;
}
table {
   margin-left: auto;
   margin-right: auto
}
span.redtext {
   color: red;
}