.columnRemark  {
font-size:13px;
border-collapse:collapse; 
margin-top:5px;
}
.columnRemark th {
font-weight:bold;
border:2px solid #666;
padding:5px;
}
.columnRemark td {
border:2px solid #666;
padding:4px;
}
.mydiv
	{
		border:1px solid #000;
		margin:10px;
		padding:10px;
		height:98px;
		background-color:yellow;
		font-family:微软雅黑;
	}
	.myul
	{
		padding:0px;
		margin:10px 0px 0px 0px;
		clear:both;
	}
	.myul li
	{
		border:1px solid #000;
		margin:0px 0px 0px 20px;
		padding:10px 20px 10px 20px;
		font-family:Tahoma;
		text-align:center;		
		float:left;
		list-style:none;
	}
	.easy
	{
		background-color:green;
color:#fff;
	}
	.normal
	{
		background-color:white;
	}
	.hard
	{
		background-color:red;
color:#fff;
	}