.img-item {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    background-color: #fff
}

.img-item .item-desc-wrap {
    -webkit-box-flex: 1;
    -ms-flex: 1;
    flex: 1;
    position: relative
}

.item-desc-wrap .item-desc {
    position: absolute;
    top: 50%;
    width: 100%;
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
    text-align: center
}

.item-img {
    padding: 60px !important
}

.item-desc h2 {
    padding-bottom: 22px;
    margin: 30px 0;
    font-size: 40px;
    font-weight: 700
}

.item-desc div {
    display: inline-block;
    margin: 5px 0;
    font-size: 16px;
    text-align: left
}

.img-item img {
    width: 100%
}

.img-item .col-md-5, .img-item .col-md-7 {
    padding-left: 0;
    padding-right: 0
}

.bg-black {
    background-color: #000;
    color: #fff
}

@media (max-width:768px) {
    .item-desc-wrap .item-desc {
        position: relative;
        top: 0;
        -webkit-transform: translate(0);
        transform: translate(0);
        padding: 20px 0 0
    }

    .item-desc-wrap {
        height: auto !important
    }

    .img-item .item-desc-wrap {
        width: 100%;
        height: 180px
    }

    .item-desc h2 {
        padding-bottom: 0;
        margin: 0;
        font-size: 20px
    }

    .item-desc div {
        font-size: 14px;
        margin-bottom: 0 !important
    }

    .item-img {
        padding: 20px !important
    }
}

.index-card {
    width: 800px;
    margin: 100px auto
}

.banner {
    position: relative;
    margin-top: 90px
}

@media (max-width:768px) {
    .banner {
        margin-top: 56px
    }
}

.banner img {
    width: 100%
}

.banner-mask {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%
}