#help-box {
	position: fixed;
	width: 100%;
	height: 100%;
	background-color: rgba(0, 0, 0, .5);
	bottom: 0;
	left: 0;
	display: none;
}

#help-box #box-transparent {
	position: absolute;
	width: 100%;
	height: 100%;
}

#help-box #box-transparent #iphone-web {
	background-image: url('../img/help/iphone-web.png');
	background-repeat: no-repeat;
	background-size: contain;
	width: 80%;
	height: 100%;
	background-position: bottom;
	margin-left: 8%;
	display: none;
}
#help-box #box-transparent #iphone-wechat {
	background-image: url('../img/help/iphone-wechat.png');
	background-repeat: no-repeat;
	background-size: contain;
	width: 90%;
	height: 100%;
	background-position: top;
	margin-left: 7.5%;
	display: none;
}

#help-box #box-transparent #android-wechat {
	background-image: url('../img/help/android-wechat.png');
	background-repeat: no-repeat;
	background-size: contain;
	width: 90%;
	height: 100%;
	background-position: top;
	margin-left: 7.5%;
	display: none;
}

#help-box #box-transparent #another-device {
	background-image: url('../img/help/change-web.png');
	background-repeat: no-repeat;
	background-size: contain;
	width: 100vw;
	height: 100%;
	background-position: top;
	margin-top: 10vh;
	display: none;
}

#help-box #box-transparent #addsuccess{
	background-image: url('../img/help/addsuccess.png');
	background-repeat: no-repeat;
	background-size: contain;
	width: 80vw;
	height: 100vh;
	margin-left: 10vw;
	margin-top: 5vh;
	background-position: top;
	display: none;
}