:root {
    --cl-main: #1D336E;
    --cl-pink: #EFB9B9EF;
}

.btn_list_ebook {
    background-color: var(--cl-main);
    color: #fff;
    padding: 6px 30px;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.btn_list_ebook:hover {
    background-color: var(--cl-pink);
    color: #fff;
}

.list_ebook {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    margin: -12px;
}

.item_ebook {
    padding: 12px;
}