.title {
    height: 55px;
    line-height: 55px;
    color: #404040;
    font-size: 36px;
    text-align: center;
    margin: 40px 0 10px 0;
}

.operating>p {
    text-align: center;
    color: #a6a6a6;
}

.first>p {
    text-align: center;
    color: #a6a6a6;
}

.list .col-md-6 div {
    width: 80%;
    /* width: 469px;
    height: 265px; */
    margin-right: 82px;
    margin-left: 40px;
    margin-bottom: 40px;
}

.list div img {
    width: 100%;
    height: 100%;
    border-radius: 20px;
}

.first_text {
    margin-bottom: 50px;
    padding: 0 150px;
}

.first_text h5 {
    text-align: center;
}

.bg {
    background: url("../../images/operating/bg.png") no-repeat;
    background-size: 100% 100%;
}

.swiper {
    margin: 40px 0;
}