span.cblock {
  border-radius: 4px;
  background-color: #F3F3F3;
  padding: 6px 8px;
  margin: 0px 5px;
}

span.cblock input[type=submit] {
  background: url('/img/send.png') no-repeat;
  padding-left: 20px;
}

textarea#paste {
  width: 50%;
  height: 300px;
}

pre code {
  background-color: #777777;
}