html,body {
	width: 700px;
	margin: auto; 
	font-size:14px;
}
	.main700{
		position: absolute;		
	width: 700px;
	}
    .H10{height: 10px;}
    .H15{height: 15px;}
    .H50{height: 50px;}
    .white{background: #fff;}
    .van-nav-bar__text{
		color:#555;
	}	
	.van-nav-bar .van-icon{
		color:#555;
	}
	
	
@media (max-width: 700px) {
	html,body {
		width: 100%; 
	}
	.main700{
		position: absolute;		
	width: 100%;
	}
}

