.footer-icon {
    position: fixed;
    display: block;
    width: 64px;
    height: 64px;    
    z-index: 10;
}

.footer-icon img {
    width:100%;
}

.phone-icon {
    left: 10px;
    bottom: 10px;
}

.whatsapp-icon {
    right: 10px;
    bottom: 10px;
    width: 60px;
}