.whatsapp-link {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    color: lime;
}

.whatsapp-link .fa-whatsapp {
    color: lime;
    font-size: 45px;
}

.whatsapp-link .fa-whatsapp:hover {
    font-size: 50px;
}

@media screen and (max-width: 1024px) {
    .whatsapp-link .fa-whatsapp {
        font-size: 35px;
    }

    .whatsapp-link .fa-whatsapp:hover {
        font-size: 40px;
    }
}

@media screen and (max-width: 450px) {
    .whatsapp-link {
        right: 10px;
    }
}