/**
 *
 * @author      Jeison Sánchez <jeison@nigma.co>
 * @website     https://www.nigma.co
 *
 */

.btn-whatsapp {
    position: fixed;
    z-index: 999;
    bottom: 20px;
    right: 20px;
}

.btn-whatsapp:before,
.btn-whatsapp:after {
    content: "";
    position: absolute;
    top: 2px;
    left: 4px;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background-color: #00e676;
    opacity: 0;
    animation: onda 1.7s infinite;
}

.btn-whatsapp:before {
    animation-delay: 1s;
}

.btn-whatsapp:after {
    animation-delay: 1.3s;
}

.btn-whatsapp img {
    position: relative;
    z-index: 2;
}

@keyframes onda {
    0% {
        transform: scale(1);
    }

    15%{
        opacity: 1;
    }

    100% {
        opacity: 0;
        transform: scale(2.5);
    }
}