.product_intro_body img{width:100%}
a{
    text-decoration:none;
    color:#fff;
}
.top_desc {
    display: flex;
    justify-content: space-around;
    margin: 0 15px;
    height: 270px;
    color: #000;
}

.left_desc, .right_desc {
    flex: 1;
    background: rgb(204, 204, 204);
    padding: 0 10px;
}
.left_desc {
    margin-right: 10px;
}
.right_desc {
    flex: 1;
}

.top_desc img {
    width: 60%;
    height: 70px;
    object-fit: contain;
    border: 0;
    margin-bottom: 30px;
    margin-top: 20px;
}

.top_desc .top {
    height: 180px;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #000;
}
.top_desc .bottom {
    color: #000;
}

.about_desc {
 background: url(../images/about_bg.png) no-repeat;
    background-size: cover;
    margin: 10px 0;
    padding-bottom: 30px;
}

    .about_desc h2 {
        text-align: center;
        line-height: 72px;
    }

.abut-container {
    padding: 0 15px;
    margin-bottom: 20px;
}

.about_desc button {
    text-align: center;
    width: 100px;
    height: 30px;
    background: #43719a;
    border-radius: 15px;
    border: 0;
    color: #fff;
    margin: 0px auto;
    display: block;
}

.case_container .product_list img, .product_container .product_list img {
    width: 100%;
}

.case_container .product_list, .product_container .product_list {
    padding: 0 5px;
}

    .case_container .product_list li a, .product_container .product_list li a {
        color: #000;
        text-decoration: none;
        position: relative;
    }

.program_cases h2 {
    text-align: center;
    line-height: 80px;
}

.case_container .product_list li, .product_container .product_list li {
    width: 50%;
    padding: 0 5px;
    box-sizing: border-box;
    text-align: center;
    display: inline-block;
    margin-bottom: 25px;
}

.product_display h2, .product_display h3 {
    text-align: center;
    margin: 10px 0;
}

.product_display h3 {
    margin-bottom: 30px;
}

.product_display h2 {
    position: relative;
    margin-top: 30px;
}

    .product_display h2::before, .product_display h2::after {
        position: absolute;
        content: "";
        height: 2px;
        width: 50px;
        background: #000;
        top: 15px;
    }

    .product_display h2::before {
        left: 60px;
    }

    .product_display h2::after {
        right: 60px;
    }

.container {
    padding-bottom: 50px;
}

.program_cases button, .product_display button {
    border: 0;
    color: #fff;
    background: #000;
    width: 115px;
    height: 35px;
    border-radius: 20px;
    margin: 0 auto;
    display: block;
    margin-top: 10px;
    margin-bottom: 40px;
}

.product_container .product_list li a p {
    position: absolute;
    bottom: 4px;
    height: 35px;
    line-height: 35px;
    width: 100%;
    color: #fff;
    font-weight: bolder;
    background: #00000096;
}

.contact_container {
    background: url("../images/图层33.png") 100% 100% no-repeat;
    position: relative;
}

.contact_detail {
    position: relative;
    background: #39648d;
    left: 20px;
    top: -20px;
    color: #fff;
    font-size: 13px;
    padding: 20px;
    width: calc( 100% - 60px);
}

    .contact_detail h3 {
        font-size: 25px;
    }

        .contact_detail h3 span {
            color: #ea4655;
            font-size: 17px;
            font-weight: normal;
        }

    .contact_detail .contact_title p {
        text-indent: 37px;
        line-height: 40px;
        margin-bottom: 15px;
        font-size:15px;
    }

.contact_phone, .address {
    line-height: 30px;
}

    .contact_phone img, .address img {
        margin-right: 10px;
    }

    .contact_phone div, .address div {
        margin-left: 37px;
    }