.appdown
{
	width: 100%;
	height: 90%;
	background: url(../images/app.png)no-repeat center;
	background-size: 100% 100%;
	position: relative;
}
.code
{
	display: block;
	width: 500px;
	height: 500px;
	position: absolute;
	top: 10%;
	left: 22%;
}
.an
{
	width: 200px;
	height: 60px;
	display: block;
	position: absolute;
	background: url(../images/android.png)no-repeat center;
	background-size: 100% 100%;
	top: 48%;
	right: 30%;
}
.ios
{
	width: 200px;
	height: 60px;
	display: block;
	position: absolute;
	background: url(../images/ios.png)no-repeat center;
	background-size: 100% 100%;
	top: 60%;
	right: 30%;
}