body{
    padding-top: 116px;

}

.nav2{
    width: 750px;
    position: fixed;
    left:50%;
    height: 65px;
    margin-left: -375px;
    background-color: #fff;
    top:128px;
    z-index: 998;
}
.nav2 a{
    font-size: 24px;
    color: #898f91;
    position: absolute;
    top:0;
    cursor: pointer;
    line-height: 65px;
    width: 96px;
}
.nav2 a.act,
.nav2 a:hover{
    color: #3c3b3b;
}
.nav2 a span{
    display: none;
}
.nav2 a:hover span,
.nav2 a.act span{
    display: block;
    position: absolute;
    bottom: 2px;
    background-color: #3c3b3b;
    width: 20px;
    height: 2px;
    left:50%;
    margin-left: -10px;
}
.nav2 a.a1{
    left:40px;
}
.nav2 a.a2{
    left:185px;
}
.nav2 a.a3{
    left:330px;
}
.nav2 a.a4{
    left:475px;
}
.nav2 a.a5{
    left:620px;
}





.sc-wrap{
    background-color: #eff2f3;
}
.sc{
    width: 750px;
    background-color: #fff;
    margin: 0 auto;
}
.sc .img img{
    display: block;
    width: 100%;
}
.sc .item{
    position: relative;
    padding-bottom: 60px;
}
.sc .item .md{
    position: absolute;
    left: 0;
    top: -116px;
}
.sc .item .icon{
    padding: 60px 0 10px 0;

}
.sc .item .icon i{
    display: block;
    margin: 0 auto;
    background-size: 100%;
}
.sc .item .icon p{
    text-align: center;
    margin-top: 20px;
    font-size: 30px;
    color: #898f91;
}
.sc .icon1{
    width: 41px;
    height: 56px;
    background-image: url("../images/sc/icon1.png");
}
.sc .icon2{
    width: 78px;
    height: 56px;
    background-image: url("../images/sc/icon2.png");
}
.sc .icon3{
    width: 65px;
    height: 57px;
    background-image: url("../images/sc/icon3.png");
}
.sc .icon4{
    width: 62px;
    height: 54px;
    background-image: url("../images/sc/icon4.png");
}
.sc .icon5{
    width: 62px;
    height: 48px;
    background-image: url("../images/sc/icon5.png");
}
.sc .des{
    font-size: 24px;
    line-height: 2;
    color: #898f91;
    width: 680px;
    margin: 30px auto 0 auto;
    text-align: justify;

}