.usage{
  background:#fff8f8 url(images/scusage.png) right top no-repeat;
}
.runnable{
  background:#f8f8ff url(images/scrunnable.png) right top no-repeat;
}
.result{
  background:#f8fff8 url(images/scresult.png) right top no-repeat;
}
.example{
  background:#fffff8 url(images/scexample.png) right top no-repeat;
}
p.btn{margin-bottom:-1.5%;}
p.btn span{
  border:solid #000000 1px;
  background:#bbbbbb;
  cursor:pointer;
}