.input-error {
    color: red;
}

#loader {
    position: relative;
    top: 60%;
    left: 40%;
    transform: translate(-50%, -50%);
    z-index: 9999;
    width: 100px;
    height: 100px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid #3399cc;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}