.gd-whatsapp-fixed{
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 60px;
    height: 60px;
    z-index: 9999;
    display: block;
    text-decoration: none;
}

.gd-whatsapp-fixed img{
    width: 100%;
    height: 100%;
    display: block;
}