html,
body {
	height: 100%;
	/* width: 100%; */
}

body {}

#wrap {
	/* background: url('../images/kai_bg.jpg'); */
	background-size: cover;
	height: 100%;
}

#mao {
	display: block;
	/* width: 95%; */
	margin: 0 auto;
	/* padding-top: 13%; */
}

#box {
	background: url('../images/index_bg.jpg');
	background-size: cover;
	height: 100%;
	background-position: center;
}