.blob {
    background: #740212;
    border-radius: 100%;
    position: fixed;
    right: 25px;
    bottom: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 18px;
    line-height: 1.3;
    box-shadow: 0 0 0 0 rgba(116, 2, 18, 1);
    transform: scale(1);
    animation: pulse 2s infinite;
    color: #fff;
    text-decoration: none;
    width: 100px;
    height: 100px;
}
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(252, 79, 102, 0.7);
    }

    70% {
        box-shadow: 0 0 0 20px rgba(252, 79, 102, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(252, 79, 102, 0);
    }
}
.blob:hover {
    opacity: 0.85;
}