#whatsapp .wtsapp:focus {
    border: none;
    outline: none;
}

#whatsapp .wtsapp {
    position: fixed;
    transition: all .5s ease;
    background: #25d366;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    box-shadow: 0 0 20px rgba(0,0,0,0.15);
    border-radius: 50px;
    border-right: none;
    color: #fff;
    font-weight: 700;
    font-size: 18px;
    bottom: 20px;
    right: 20px;
    border: 0;
    z-index: 99;
    width: 50px;
    height: 50px;
    line-height: 48px;
}

#whatsapp .wtsapp i {
    font-size: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

#whatsapp .wtsapp:before {
    content: "";
    position: absolute;
    z-index: -1;
    left: 50%;
    top: 50%;
    transform: translateX(-50%) translateY(-50%);
    display: block;
    width: 60px;
    height: 60px;
    background: #25d366;
    border-radius: 50%;
    -webkit-animation: pulse-border 1500ms ease-out infinite;
    animation: pulse-border 1500ms ease-out infinite;
}

@keyframes pulse-border {
    0% {
        transform: translateX(-50%) translateY(-50%) translateZ(0) scale(1);
        opacity: 1;
    }

    100% {
        transform: translateX(-50%) translateY(-50%) translateZ(0) scale(1.5);
        opacity: 0;
    }
}