.loading {
    margin-top: 0.25em;
    width: 1em;
    height: 1em;
    border-radius: 50%;
    border: 1px solid #04040433;
    border-top-color: #123eab;
    animation: rotation 1s infinite linear;
}

@keyframes rotation {
    to {
        transform: rotate(360deg);
    }
}