.article-content__scroll-tracker-container{
    background-color: #000;
    height: 5px;
    position: fixed;
    left: 0;
    top: 0;
    transition: top .3s ease-out;
    width: 100%;
    z-index: 999;
}

.article-content__scroll-tracker{
    background-color: var(--category-color);
    height: 100%;
    transition: width .2s ease-out;
}