* {
	padding:0;
	margin:0;
}
ul {
	list-style:none;
}
#big {
	width:100%;
	height:100%;
	background:url("https://www.jq22.com/img/cs/500x500-1.png") no-repeat;
	position:fixed;
	top:0;
	left:0;
	background-position:center 0;
}
#bigImg {
	width:100%;
	height:120px;
	position:relative;
	z-index:10;
}
#bigImg ul {
	overflow:hidden;
	width:1200px;
	height:120px;
	margin:0 auto;
	background-color:rgba(255,255,255,.5);
}
#bigImg ul li {
	float:left;
	cursor:pointer;
	margin:10px 0 10px 96px;
}
#bigImg ul li img {
	width:180px;
	height:100px;
}