.item_top {
    position: relative;
    width: 100%;
    height: 990px;
    background: url(../../images/product/productItems/item4/topbg.png) no-repeat center;
}

.item_top_pos {
    position: absolute;
    left: 50%;
    top: 8vw;
    -webkit-transform: translateX(-50%);
    transform: translateX(-50%);
}

.item_top_header {
    font-size: 52px;
    color: #186498;
    text-align: center;
    letter-spacing: 2vw;
    margin-bottom: 3vw;
}

.item_top_con {
    width: 50vw;
    padding: 4vw;
    opacity: 0.84;
    background-image: -webkit-gradient(linear, left top, left bottom, from(#bdbabb), to(#fbfafc));
    background-image: linear-gradient(#bdbabb, #fbfafc);
    color: #060606;
    font-size: 22px;
    line-height: 1.5;
}


.item_bottom {
    position: relative;
    width: 100%;
    height: 990px;
    background: url(../../images/product/productItems/item4/bottombg.png) no-repeat center;
}

.item_bottom_pos {
    position: absolute;
    width: 1170px;
    left: 50%;
    top: 20%;
    -webkit-transform: translateX(-50%);
    transform: translateX(-50%);
}

.item_bottom_header {
    position: absolute;
    display: table;
    width: 500px;
    height: 500px;
    border-radius: 250px;
    background-color: #ffffff;
    text-align: center;
    font-size: 50px;
    color: #060606;
    z-index: 99;
}

.item_bottom_header em {
    color: #186498
}

.item_bottom_header span {
    display: table-cell;
    vertical-align: middle;
}

.item_bottom_list {
    margin: 46px 0;
    position: absolute;
    left: 360px;
    top: 0;
    width: 800px;
    padding: 0 20px 0px 150px;
    background-color: #eeeeee;
    font-size: 20px;
    color: #060606;
    z-index: 9;
}

.item_bottom_list li {
    margin: 20px 0;
}

.item_bottom_list li h5 {
    font-weight: bold;
    font-style: italic;
}


/* 小于1200的页面 */
@media (max-width:1200px) {
    .item_top_con {
        width: 80vw;
    }

    .item_top_pos {
        top: 12vw;
    }

    .item_bottom_pos {
        top: 5%;
        width: auto;
    }

    .item_bottom_header {
        position: static;
        margin: 0 auto;
        width: 300px;
        height: 300px;
        border-radius: 150px;
        font-size: 40px;
    }

    .item_bottom_list {
        position: static;
        width: 90vw;
        padding: 20px;
        margin: 10px auto;
    }

}


@media (max-width:768px) {

    .item_top_pos {
        top: 4vw;
    }
}