@media screen and (max-width: 723px) {
    .all-articles{
        width: 100%;
    }

    .container-content-sidebar{
        flex-direction: column;
        align-items: center;
    }

    .sidebar{
        width: 100%;
        margin-top: unset !important;
        margin-left: unset;
        margin-right: unset;
    }
}

@media screen and (max-width: 490px) {
    .all-articles{
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .article-preview{
        width: 90%;
    }
}