p,h3 {
	-webkit-margin-before:0;
	-webkit-margin-after:0;
}
.tab {
	width:500px;
	height:500px;
	position:fixed;
	left:50%;
	top:50%;
	transform:translate(-50%,-50%);
	display:flex;
	flex-direction:column
}
.tit {
	display:flex;
}
.tit>p {
	width:33.3%;
	text-align:center;
	line-height:50px;
	font-size:18px;
	background-color:#ccc;
}
.tit>p:first-child {
	background-color:#666;
}
.con {
	background-color:#666;
	flex:1;
	position:relative;
}
.con>h3 {
	position:absolute;
	top:50%;
	left:50%;
	transform:rotate(-50%,-50%);
}
.con2,.con3 {
	display:none;
}