.loader {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
}
.loader::after {
    content: '';
    display: block;
    font-size: 4rem;
    width: 68px;
    height: 68px;
    border: 5px solid #1687B7;
    border-top-color: transparent;
    border-radius: 100%;
    animation: spin 1s linear infinite;
}

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