body{
    background-color: #fff;
}
header .nav li:nth-child(1) a span {
    color: #34A0D5;
    border-bottom: 2px solid #34A0D5;
}
.serviceNav li:nth-child(4) a{
    color: #34A0D5;
}

/*banner开始*/
.banner{
    height: 450px;
    overflow: hidden;
}
.banner .neikuan{
    position: relative;
    height: 100%;
}
.banner img{
    width: 1920px;
    height: 450px;
    position: absolute;
    margin-left: -420px;
}
/*main开始*/
.board{
    margin: 60px 0 80px;
}
.board .list{
    position: relative;
}
.board li{
    float: left;
    text-align: center;
    position: relative;
}
.board p{
    color: #fff;
    position: absolute;
    padding: 0 30px;
    line-height: 30px;
    text-align: justify;
    display: none;
}
.board img{
    /*display: none;*/
}
.board .item1{
    width: 334px;
    height: 365px;
    background-color: #209dfb;
    margin-bottom: 18px;
}
.board .item1 img{
    width: 232px;
    margin-top: 127px;
}
.board .item1 p{
    top: 46px;
}
.board .item2{
    width: 376px;
    height: 190px;
    background-color: #f27920;
    margin: 0 18px;
}
.board .item2 img{
    width: 207px;
    margin-top: 36.5px;
}
.board .item2 p{
    top: 34px;
}
.board .item3{
    width: 334px;
    height: 365px;
    background-color: #3465e5;
    margin-bottom: 18px;
}
.board .item3 img{
    width: 113px;
    margin-top: 126px;
}
.board .item3 p{
    top: 132px;
}
.board .item4{
    width: 412px;
    height: 368px;
    position: absolute;
    left: 334px;
    top: 190px;
}
.board .item4 img{
    width: 412px;
    height: 368px;
}
.board .item5{
    width: 334px;
    height: 365px;
    background-color: #79b601;
}
.board .item5 img{
    width: 205px;
    margin-top: 125px;
}
.board .item5 p{
    top: 60px;
}
.board .item6{
    width: 376px;
    height: 190px;
    background-color: #439d2b;
    margin: 0 18px;
    margin-top: 175px;
}
.board .item6 img{
    width: 138px;
    margin-top: 34px;
}
.board .item6 p{
    top: 60px;
}
.board .item7{
    width: 334px;
    height: 365px;
    background-color: #2aa6e3;
}
.board .item7 img{
    width: 161px;
    margin-top: 124px;
}
.board .item7 p{
    top: 100px;
}
.board .active:hover img{
    display: none;
}
.board .active:hover p{
    display: block;
}
.equipment h1{
    color: #444;
    font-size: 40px;
    font-weight: bold;
    text-align: center;
}
.equipment img{
    width: 1080px;
    margin: 40px 0 80px;
}