#whatsapp-float {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 99;
    cursor: pointer;
}
@media only screen and (max-width: 991px) {
    #whatsapp-float {
        bottom: 80px;
    }
    #whatsapp-float img {
        width: 30px;
        height: 30px;
    }
}
#whatsapp-float img {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    box-shadow: 0 2px 5px rgba(0,0,0,0.3);
    transition: transform 0.3s;
}

#whatsapp-float img:hover {
    transform: scale(1.1);
}