.asw-whatsapp {
    position: fixed;
    bottom: 20px;
    width: 55px;
    height: 55px;
    background: #25D366;
    color: #fff;
    font-size: 26px;
    border-radius: 50%;
    text-align: center;
    line-height: 55px;
    z-index: 9999;
    box-shadow: 0 4px 10px rgba(0,0,0,.3);
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.asw-whatsapp img {
    width: 28px;
    height: 28px;
    padding: 0;
    display: block;
}


.asw-right {
    right: 20px;
}

.asw-left {
    left: 20px;
}

.asw-whatsapp:hover {
    transform: scale(1.05);
}