.error-reg {
    background: #f2dddd;
    color: #a70707;
    height: auto;
    width: 100%;
    padding: 8px;
    margin: 10px 0px;
    border-radius: 7px;
    text-align: center;
    font-weight: 700;
}

@keyframes blink {
    0% {
        opacity: .2;
    }
    20% {
        opacity: 1;
    }
    100% {
        opacity: .2;
    }
}

.saving span {
    animation-name: blink;
    animation-duration: 1.4s;
    animation-iteration-count: infinite;
    animation-fill-mode: both;
}

.saving span:nth-child(2) {
    animation-delay: .2s;
}

.saving span:nth-child(3) {
    animation-delay: .4s;
}