.sticky-whatsapp {
    width: 55px;
    height: 55px;
    background-color: green;
    position: fixed;
    z-index: 9999;
    bottom: 90px;
    right: 10px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    text-align: center;
}
.sticky-whatsapp a span {font-size: 34px;color: white;padding: 10px;}