body 
{
  margin: 0;
  padding: 0;
}

.CodeMirror-line-numbers
{
	padding: 0;
	font-family: monospace;
	font-size: 13px;
	color: #555;
	border-right: 1px solid #aaa;
	text-align : right;
	padding: 10px 5px 0 0;
	width: 40px;
	background-color: #eee;
}