.rw-icon-whatsapp {
    position: fixed;
    bottom: 80px;
    right: 25px;
    height: 60px;
    width: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 999;
    background-color: #50cb5e;
    border-radius: 50%;
    box-shadow: 0 5px 10px rgba(0,0,0,.1);
}

.rw-icon-whatsapp img {
    height: 26px;
    width: 26px;
    transition: all 0.25s 0s ease-in-out;
}

.rw-icon-whatsapp:hover img {
    scale: 1.1;
}