div.codeblock {
  padding: 5px;
  border: 1px solid #ccc;
  background-color: #eee;
}

/*
Multiclass not supported in IE6.
*/
div.codeblock.nowrap-expand {
  /*
  Not supported in IE6 or 7.
  */
  white-space: nowrap;
  overflow: hidden;
}