*{
	margin: 0;
	padding: 0;
}
.wrap{
	max-width: 640px;
	width: 100%;
	margin: auto;
}
.flex{
	display: flex;
	flex-wrap: nowrap;
	justify-content: center;
	align-items: center;
	align-content: center;
}
img{
	width: 100%;
	display: block;
}
.modular{
	position: relative;
}
.modular_button{
	position: absolute;
	top: 0;
	left: 0;
	height: 100%;
	width: 95%;
	padding: 0 2.5%;
}
.modular_button span{
	padding:0 2.5%;
}
.modular_button_bottom{
	width: 90%;
	padding: 0 5%;
}
.modular_button_bottom span{
	padding: 0 5%;
}
.wechat{
	width: 100%;
	height: 100%;
	position: fixed;
	z-index: 999;
	background: rgba(0, 0, 0, .8);
	display: block;
	left: 0;
	top: 0;
}
.modular{
	position: relative;
	overflow: hidden;
}
.modular .modular_exhibit {
	position: absolute;
	top: 0;
	left: 0;
	z-index: -1;
	padding-top: 8%;
	width: 106%;
}