.w1280 {
    width: 1280px;
    margin-left: auto;
    margin-right: auto;
}
.contentfather span {
    line-height: 25px;
}
.center {
    text-align: center
}

.dib {
    display: inline-block;
}

.both:after {
    content: "";
    display: table;
    clear: both;
}

.banner {
    width: 100%;
    height: 500px;
    background: url(/uploads/image/citdfm/dfmbanner.png) no-repeat center;
    background-size: cover;
}
    .banner a{
        display:inline-block;width:100%;height:100%;
    }

    .advantage {
        width: 100%;
        height: 60px;
        line-height: 60px;
        background: #e4ddd2;
        font-size: 18px;
        color: #333333
    }

    .advantage li {
        width: 25%;
        float: left;
        text-align: center;
        border-left: 1px solid #cfc2ae;
    }

        .advantage li:last-child {
            border-right: 1px solid #cfc2ae;
        }

.explain {
    padding: 40px 0 50px 0;
}

.video_img {
    width: 960px;
    margin: 0 auto;
    height: 555px;
    /*background:url(/uploads/image/citdfm/video_img.png) no-repeat center;background-size:cover;*/
    position: relative
}

    .video_img video {
        width: 100%;
        height: 100%;
    }

    .video_img .play {
        width: 64px;
        height: 64px;
        display: inline-block;
        background: url(/uploads/image/citdfm/play.png) no-repeat center;
        background-size: cover;
        position: absolute;
        left: 50%;
        margin-left: -32px;
        top: 50%;
        margin-top: -32px;
        z-index: 10
    }


.instrument {
    width: 100%;
    height: 550px;
    padding: 40px 0 50px 0;
    background: #faf8f6;
}

    .instrument li:nth-child(1) {
        margin-left: 0;
    }

    .instrument li {
        width: 305px;
        height: 300px;
        float: left;
        margin-left: 20px;
        text-align: center;
        /*padding: 0 10px;*/
        background: #fff;
        transition: all .2s ease;
    }

        .instrument li:hover {
            box-shadow: -2px 0 31px rgba(0,0,0,.1);
        }

        .instrument li img {
            display: inline-block;
            height: 153px;
            width: 100%;
        }

        .instrument li p {
            color: #333333;
            font-size: 20px;
            margin-bottom: 15px;
        }

        .instrument li span {
            font-size: 14px;
            line-height: 25px;
            color: #999999;
        }

.bg_tolad {
    width: 100%;
    background: url(/uploads/image/citdfm/bg_tolad.png) no-repeat center;
    background-size: cover;
    height: 300px;
    text-align: center;
    padding-top: 110px;
}

    .bg_tolad p {
        font-size: 30px;
        color: #fff;
        margin-bottom: 20px;
    }

    .bg_tolad span {
        color: #fff;
        font-size: 16px;
    }

.exhibition {
    padding: 40px 0 30px 0;
    text-align: center;
}

    .exhibition ul {
        width: 1280px;
        margin: 0 auto;
        margin-top: 40px;
    }

        .exhibition ul li {
            width: 124px;
            height: 165px;
            text-align: center;
            float: left;
            margin-right: 20px;
            transition: all .2s ease;
            padding: 34px 32px 0 32px;
            border: 1px solid #f5f5f5;
            margin-bottom: 20px;
        }

            .exhibition ul li:nth-child(9n) {
                margin-right: 0;
            }

            .exhibition ul li img {
                width: 60px;
                height: 60px;
                display: inline-block;
                margin-bottom: 16px;
            }

            .exhibition ul li span {
                font-size: 16px;
                color: #333333
            }

            .exhibition ul li:hover {
                box-shadow: 0px 3px 20px 0px rgba(0, 0, 0, 0.2);
            }


.scene {
    background: #faf8f6;
    width: 100%;
    padding: 40px 0 50px 0;
}

.sceneswiper {
    width: 100%;
    height: 430px;
}

.download {
    height: 400px;
    width: 100%;
    background: url(/uploads/image/citdfm/download.png) no-repeat center;
    background-size: cover;
    padding-top: 90px;
    color: #fff
}

.download_btn {
    background: url(/uploads/image/citdfm/download_btn.png) no-repeat center;
    background-size: cover;
    width: 355px;
    height: 90px;
    display: block;
    margin: 0 auto;
}

.sidebar-tab {
    width: 84px;
    height: 92px;
    background-color: #ba9358;
    border-radius: 4px;
    padding: 14px 16px;
    box-sizing: border-box;
    color: #fff;
    position: fixed;
    right: 0;
    top: 60%;
    text-align: center;
}