body,html{
    height: 100%;

}
ul li {
    list-style-type: none;
}
.slides-box {
    width: 100%;
    height: 500px;
    margin: auto;
    overflow: hidden;
}
.slides {
    position: relative;
    height: 500px;
    width: 100%;
    margin: auto;
    float: left;
}
.slides li {
	position: absolute;
    width:  100%;
    height: 500px;
}
.slides li img{
    display: block;
    width: 100%;
    margin: auto;
}
.prev, .next {
    position: absolute;
    z-index: 99;
    top: 50%;
    margin-top: -40px;
    left: 0;
    height: 70px;
    width: 30px;
    color: #fff;
    cursor: pointer;
    background-color: #000;
	margin-left:50px;
	
    opacity: .5;
}
.prev:hover, .next:hover{
	opacity: .7;
}
.prev{
	background-image: url("../images/123.gif");
}
.next {
    left: auto;
		margin-right:50px;
    right: 0;
    background-image: url("../images/456.gif");
}