.pulsating-button {
    position: fixed;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    bottom: 70px;
    right: 40px;
    background-color: rgba(0, 200, 0, 1);
    color: #fff;
    border-radius: 50%;
    text-align: center;
    font-size: 30px;
    z-index: 9000;
    box-shadow: 0 0 0 0 rgba(0, 200, 0, 0.7);
    animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 200, 0, 0.7);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(0, 200, 0, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(0, 200, 0, 0);
    }
}