.whatsapp-button{
    position: fixed;
    bottom: 15px;
    right: 15px;
    z-index: 99;
    background-color: #25d366;
    border-radius: 100%;
    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;
}

@media only screen and (max-width: 600px) {
	@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;
		}
	}
}

@media only screen and (min-width: 601px) {
	.whatsapp-button{
		width: 70px;
		height: 70px;
		font-size: 40px;
	}

	@keyframes effect {
		20%, 100% {
			width: 70px;
			height: 70px;
			font-size: 40px;
		}
		0%, 10%{
			width: 75px;
			height: 75px;
			font-size: 45px;
		}
		5%{
			width: 70px;
			height: 70px;
			font-size: 40px;
		}
	}
}