ul,
		li {
			list-style: none;
			margin: 0;
			padding: 0;
		}

		.sd {
			width: 260px;
			margin: 50px auto 0;
		}

		.sdspan {
			float: left;
			display: inline-block;
			margin: 0;
			border: 1px dotted green;
			height: 26px;
			width: 26px;
			line-height: 26px;
			text-align: center;
		}

		.sdli {
			width: 100%;
			height: 26px;
			float: left;
		}

		.bl {
			border-left-color: green;
			border-left-style: solid;
		}

		.bt {
			border-top-color: green;
			border-top-style: solid;
		}

		.br {
			border-right-color: green;
			border-right-width: 2px;
			border-right-style: solid;
		}

		.bb {
			border-bottom-color: green;
			border-bottom-width: 2px;
			border-bottom-style: solid;
		}

		.blankCell {
			color: blue;
			font-weight: 600;
		}

		.bg_red {
			background: red;
		}

		.clearfix:after {
			content: '';
			display: table;
			clear: both;
		}

		.btn-group {
			margin-top: 20px;
			text-align: center;
		}