body {
  margin:5; 
  background-image:url('back.jpg');
  background-attachment:fixed 
}  
h1,h2,#btn {
  font-family: Arial; 
  font-size: 14pt; 
  font-weight: bold; 
  text-align: center; 
  background-color:rgb(50%,30%,0%);
  color:rgb(100%,100%,80%);
  margin:0;
  margin-bottom:5pt;
  padding:5pt;
  text-decoration:none; 
}
h2 {
  margin-top:5pt;
}
h3 {
  font-family: Arial; 
  font-size: 14pt; 
  font-weight: bold; 
  text-align: center; 
  background-color:rgb(50%,30%,0%);
  color:rgb(100%,100%,80%);
  margin:0;
  margin-top:5pt;
  padding:5pt; 
}
p,ol,ul,div,td {
  font-family: Arial; 
  font-size: 11pt; 
  text-align: center; 
  color:rgb(0%,0%,0%);
  background-color:rgb(100%,100%,80%);
  margin:0;
  padding:5pt
}
.navi {
  font-family: Arial; 
  font-size: 12pt; 
  font-weight: bold; 
  text-align: right; 
  background-image:url();
  background-color:rgb(100%,100%,80%);
  padding:3pt; 
}
#sol {
  visibility:hidden;
}