*{ margin:0px; padding:0px;}
body 
{
    line-height:1.5;
    font-family:微软雅黑;
}
a{ text-decoration:none;}
ul,li{ list-style:none; }
img{ vertical-align:middle; max-width:100%;  }

.banner{width: 1024px;height: 280px;margin: 0 auto;}
.focus{width:1024px;height:280px;overflow:hidden;position:relative;}
.focus ul{height:380px;position:absolute;}
.focus ul li{float:left;width:1024px;height:280px;overflow:hidden;position:relative;background:#000;}
.focus ul li div{position:absolute;overflow:hidden;}
.focus .btn{position:absolute;width:1004px; padding:5px 10px;right:0;bottom:5px;text-align:center;}
.focus .btn span{display:inline-block;_display:inline;_zoom:1;width:15px;height:4px;_font-size:0;margin-left:5px;cursor:pointer;background:#fff;}
.focus .btn span.on{background:#000000;}
.focus .preNext{  
    border:none;
	text-decoration:none;
	background:url('../images/arrows.png') no-repeat;
	opacity:0.5;
	cursor:pointer;
	position:absolute;
	width:43px;
	height:58px; 
	top:50%;
	margin-top:-29px; 
	-moz-transition:opacity 0.2s ease;
	-webkit-transition:opacity 0.2s ease;
	transition:opacity 0.2s ease;
}

.focus .pre{left:10px;}
.focus .next{right:10px;background-position:right top;}