.footer-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px 10px;
    box-sizing: border-box;
    border-top: 1px solid #EAEAEA;
}
.footer-close a {
    color: #22A931 !important;
    font-size: 16px;
    font-weight: 500;
}

.footer-content {
    font-size: 15px;
    color: #666666;
    font-weight: 500;
    margin-top: 12px;
}

.footer-ad-list {
    display: flex;
    margin-left: -16px;
    margin-right: -16px;
    margin-bottom: 20px;
}

.footer-ad-item {
    width: 25%;
    display: flex;
    box-sizing: border-box;
    flex-direction: column;
    padding: 0 16px;
}

.footer-ad-item-wrap {
    position: relative;
    width: 100%;
    display: inline-block;
    font-size: 0;
    box-sizing: border-box;
}

.footer-ad-item-wrap::before {
    content: '';
    display: inline-block;
    font-size: 0;
    box-sizing: border-box;
    padding-bottom: 100%;
}

.footer-ad-item-img {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    object-fit: cover;
    width: 100%;
    height: 100%;
}

@media (max-width: 540px) {
    .footer-container {
        padding: 20px 10px;
    }
    .footer-ad-list {
        display: flex;
        margin-left: -10px;
        margin-right: -10px;
    }
    .footer-ad-item {
        padding: 0 10px;
    }
}