*{padding: 0; margin:0;}
body{background: #f9f9f9;}
.tail-gif {
    position: fixed;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    text-align: center;
    width: 100%;
}


.tail-gif-img {
    display: block;
    margin: 0 auto;
    max-width: 28%;
    border-radius: 70px;
    animation: scaleAnimation 0.5s infinite alternate;
}

.tail-gif {
    width: 100%;
}

.tail-gif img {
    max-width: 100%;
}

@keyframes scaleAnimation {
    0% {
        transform: scale(0.9);
    }

    100% {
        transform: scale(1);
    }
}