.spinner {
    margin: auto;
    width: 30px;
    height: 30px;
    border: 4px solid #ebebeb;
    border-top: 4px solid #ccc;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

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

.read-later-btn .bi-bookmark-fill {
    display: none;
}

.read-later-btn.saved .bi-bookmark-fill {
    display: inline-block;
}

.read-later-btn.saved .bi-bookmark {
    display: none;
}

.read-later-btn {
    padding: 0;
    border: none;
    background: none;
    font-size: 24px;
}