.whatsapp-button {
            position: fixed;
            bottom: 15px;
            right: 15px;
            z-index: 99;
            background-color: #25d366;
            border-radius: 50px;
            color: #ffffff;
            text-decoration: none;
            width: 50px;
            height: 50px;
            font-size: 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            -webkit-box-shadow: 0px 0px 25px -6px rgba(0, 0, 0, 1);
            -moz-box-shadow: 0px 0px 25px -6px rgba(0, 0, 0, 1);
            box-shadow: 0px 0px 25px -6px rgba(0, 0, 0, 1);
            animation: effect 5s infinite ease-in;


            margin-bottom: 50px !important;
        }

        .whatsapp-button:hover {
            color: #25d366;
            background-color: white;


        }

        @keyframes effect {

            20%,
            100% {
                width: 50px;
                height: 50px;
                font-size: 30px;
            }

            0%,
            10% {
                width: 55px;
                height: 55px;
                font-size: 35px;
            }

            5% {
                width: 50px;
                height: 50px;
                font-size: 30px;
            }
        }