.oneColFixCtr #mainContent {
	margin: 0px auto;
	width: 1000px;
	padding-top: 50px;
}.oneColFixCtr  #mainContent  #leave  {
	width: 50%;
	float: right;
	text-align: center;
	margin-top: 30px;
	margin-bottom: 30px;
}
.oneColFixCtr  #mainContent  #enter  {
	text-align: center;
	width: 50%;
	float: left;
	margin-top: 30px;
	margin-bottom: 30px;
}