.tab {
	width: 100%;
	margin: 0 0 -2px;
	padding: 0;
	display: table;
	table-layout: fixed;
}
.tab li {
	width: 33%;
	margin: 0;
	padding: 5px 10px 0;
	cursor: pointer;
	display: table-cell;
	vertical-align: middle;
	text-align: center;
	background: #666;
	border: 1px solid #333;
	box-sizing: border-box;
}
.tab li.current {
	width: 34%;
	background: #fff;
	border-bottom: none;
}
.content {
	margin: 0;
	padding-top: 16px;
        padding-left: 16px;
        padding-right: 16px;
	border: 1px solid #333;
	border-top: none;
	text-align: center;
}

.contents {
    margin-bottom: 20px;
}

.contents .content {
	display: none;
}
.contents .content:nth-child(1) {
	display: block;
}