.scroll_box{
	width: 1000px;
    height: 330px;
    overflow: hidden;
    position: relative;
    margin: 0px auto;
    padding-top: 100px;
    padding-bottom: 50px;
}
.scroll_list{
	width: 4200px;
	height: 330px;
	position: absolute;
	z-index: 1;
}
.scroll_list img{
	float:left;
	width:188px;
	margin-right:12px;
}


#buttons {
	position: absolute;
	height: 10px;
	width: 100px;
	z-index: 2;
	bottom: 28px;
	left: 500px;
}
#buttons span {
	cursor: pointer;
	float: left;
	border: 1px solid #fff;
	width:10px;
	height: 10px;
	border-radius:50%;
	background: #333;
	margin-right:5px;
}
#buttons .on{
	background: orangered;
}


.arrow{
	cursor:pointer;
	display: none;
	line-height: 39px;
	text-align:center;
	font-size:36px;
	font-weight: bold;
	width: 40px;
	height: 40px;
	position:absolute;
	z-index: 2;
	top: 180px;
	background-color:RGBA(0,0,0,0.3);
	color: #fff;
}
.arrow:hover{
	background-color:RGBA(0,0,0,0.7);
}
.scroll_box:hover .arrow{
	display: block;
}
#prev {
	left: 20px;
}
#next{
	right: 20px;
}

/* ýÌå²éѯ */
@media screen and (max-width: 1020px){
.scroll_box{
	overflow: scroll;
    width: 100%;
    padding: 0!important;
}
}