body, div, ul, li {
    margin: 0;
    padding: 0;
    font-family: "Microsoft YaHei";
    font-size: 14px;
    background:#000;
}
ul, li {
    list-style: none;
}
img{
    border:0;
}
a {
    text-decoration: none;
    color: #333;
}
a:hover{
    color:#f60;
}
.fl {
    float: left;
}
.fr {
    float: right;
}

.container{
    max-width:1920px;
    height:1080px;
    margin:0 auto;
    background:url(../images/index-bg.jpg) no-repeat scroll center;
}
.box{
    width: 1300px;
    margin: 0 auto;
    position: relative;
}
.box a{
    margin-top:650px;
}
.ba1{
    width:424px;
    height:168px;
    background:url(../images/index-nav.png) no-repeat;
    display:inline-block;
}
.ba1:hover{
    background:url(../images/index-nav.png) no-repeat 0 -181px;
}
.ba2{
    width:424px;
    height:168px;
    background:url(../images/index-nav.png) no-repeat -462px 0;
    margin-left:14px;
    display:inline-block;
}
.ba2:hover{
    background:url(../images/index-nav.png) no-repeat -462px -181px;
}
.ba3{
    width:424px;
    height:168px;
    background:url(../images/index-nav.png) no-repeat -933px 0;
    margin-left:14px;
    display:inline-block;
}
.ba3:hover{
    background:url(../images/index-nav.png) no-repeat -933px -181px;
}