.box1, .box2, .box3, .box4 {
	background-repeat: no-repeat;
	/* background-size: cover; */
	/* s */
	background-position: center;
}
.box1 {
	height: 760px;
	position: relative;
}
.box2 {
	height: 885px;
}
.box3 {
	height: 688px;
}
.box4 {
	height: 850px;
}

.box1 .btn1 {
	position: absolute;
	top: 590px;
	left: 50%;
	width: 202px;
	height: 60px;
	margin-left: -105px;
}
.box1 .btn2 {
	position: absolute;
	top: 592px;
	left: 50%;
	width: 200px;
	height: 60px;
	margin-left: 106px;
}
.box1 .btn1 img,
.box1 .btn2 img {
	width: 100%;
	height: 100%;
}
.box1 .code {
	width: 329px;
	height: 233px;
	position: absolute;
	top: 417px;
	left: 50%;
	margin-left: 364px;
}

.txt {
	display: none;
}