.custom {
    padding-top: 60px;
    padding-bottom: 80px;
}

.customCon {
    margin-top: 80px;
    display: flex;
    justify-content: space-between;
}

.customCon li {
    width: 32%;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.lastLi {
    display: flex;
    flex-direction: column;
    justify-content: space-between;

}

.lastLi>div {
    width: 100%;
    height: 48%;
    position: relative;
}

.customImg {
    width: 100%;
    height: auto;
}

.textBox {
    position: absolute;
    top: 0px;
    left: 0px;
    width: 100%;
    height: 100%;
    z-index: 2;
    background: rgba(0, 0, 0, 0.4);
    color: #fff;
    padding: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}

.topBox {
    text-align: center;
}

.topBox img {
    width: 110px;
    height: 110px;
    margin: 0px auto 22px auto;
}

.btmBox {
    display: none;
}

.customCon .li:hover .textBox {
    background: rgba(0, 0, 0, 0.7);
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}



/* 适配 */
@media (max-width: 1200px) {
    .custom {
        padding-top: 40px;
        padding-bottom: 40px;
    }

    .customCon {
        margin-top: 40px;
    }

    .textBox {
        padding: 30px 20px;
    }

    .topBox img {
        width: 80px;
        height: 80px;
    }
}

@media (max-width: 992px) {
    .customCon {
        flex-wrap: wrap;
        justify-content: unset;
    }

    .customCon li {
        width: 48%;
        max-height: 400px;
        margin-bottom: 30px;
    }

    .customImg {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .customCon li:first-child {
        margin-right: 4%;
    }

    .customCon li:last-child {
        margin-bottom: 0px;
        width: 100%;
        flex-direction: unset;
    }

    .lastLi>div {
        width: 48%;
        height: 400px;
    }

    .lastLi>div:first-child {
        margin-right: 4%;
    }
}

@media (max-width: 767px) {

    .customCon li,
    .lastLi>div {
        width: 100%;
        margin-right: 0px;
        height: 280px;
        max-height: unset;
    }

    .customCon li:last-child {
        height: auto;
    }

    .customCon li:first-child,
    .lastLi>div:first-child {
        margin-right: 0px;
    }

    .customCon li:last-child {
        flex-direction: column;
    }

    .topBox img {
        width: 70px;
        height: 70px;
        margin-bottom: 8px;
    }

    .lastLi>div:first-child {
        margin-bottom: 30px;
    }
}