.mobile-contact-stack {
    position: fixed !important;
    right: 20px !important;
    bottom: 30px !important;
    z-index: 99999999 !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 15px !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.mobile-contact-stack .contact-btn {
    width: 75px !important;
    height: 75px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    border-radius: 50% !important;
    overflow: hidden !important;
    background: #fff !important;
    border: 4px solid #fff !important;
    box-shadow: 0 8px 20px rgba(0,0,0,.25) !important;
}

.mobile-contact-stack .contact-btn img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    display: block !important;
}

.mobile-contact-stack .call { border-color: #ff0000 !important; }
.mobile-contact-stack .facebook { border-color: #1877f2 !important; }
.mobile-contact-stack .line { border-color: #00c300 !important; }

/* mobile */
@media (max-width: 767px) {
    .mobile-contact-stack {
        right: 15px !important;
        bottom: 20px !important;
    }

    .mobile-contact-stack .contact-btn {
        width: 65px !important;
        height: 65px !important;
    }
}

/* tablet */
@media (min-width: 768px) and (max-width: 991px) {
    .mobile-contact-stack .contact-btn {
        width: 70px !important;
        height: 70px !important;
    }
}

/* desktop */
@media (min-width: 992px) {
    .mobile-contact-stack {
        display: flex !important;
        right: 25px !important;
        bottom: 25px !important;
    }

    .mobile-contact-stack .contact-btn {
        width: 80px !important;
        height: 80px !important;
    }
}