.whatsapp-chat-widget {
    background: #fff;
    padding: 10px;
    position: fixed;
    bottom: 100px;
    right: 15px;
    z-index: 9999;
    border-radius: 50px;
    box-shadow: 0px 0px 10px #ccc;
}

.whatsapp-chat-widget a img {
    width: 30px;
    height: 30px;
}

@media (max-width: 767px) {
    .whatsapp-chat-widget {
        bottom: 50%;
        right: -10px;
        transform: translate(-50%, -50%);
    }
}