.wab-button {
    color: #fff !important;
    background-color: #25D366;
    border-radius: 50px;
    position: fixed;
    bottom: 30px;
    right: 30px;
    height:50px;
    width: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    z-index: 999999;
}