h1,
h2,
h3,
h4,
h5,
h6,
p {
	margin: 0;
	padding: 0;
}

a:active,
a:hover {
	outline: 0;
}

html {
	width: 100%;
	height: 100%;
	min-height: 100%;
	font-family: sans-serif;
	-webkit-text-size-adjust: 100%;
}
body{
	background-color: #fff;
	margin: 0;
	padding: 0;
	width: 100%;
	height: 100%;
}

.WaChatQR{
	margin: 20px auto;
}

.title{
	font-size: 3rem;

}
.description{
	width: 300px;
	margin: 30px auto;
}

.WaChatQR img{
	width: 150px;
	height: 150px;
}

.WaChatQR div{
	border: #000 solid 1px;
	width: 130px;
    height: 40px;
	line-height: 40px;
	border-radius: 5px;
	margin: 20px auto;
}

.demo{
	margin: 20px auto;
}
.demo video{
	width: 260px;
    position: absolute;
	top:0;
	left: 0;
	right: 0;
	bottom: 0;
	margin:auto;
    z-index: -1;
}

.iphone{
	width: 300px;
}


.footer{
	text-align: center;
    width: 100%;
	position: relative;
    bottom: 0;
	left: 0;
}
.footer p{
	margin: 0;
}