.articles-nav-container {
    text-align: center;
}

.articles-nav {
    display: inline-block;
    border-radius: 100px;
    box-shadow: 0 0 70px rgba(14, 119, 255, 0.22);
    padding: 15px 25px;
}

.articles-nav .nav-item {
    font-size: 20px;
    transition: color .2s;
    border-right: 1px solid #000000;
    padding: 5px 30px;
    cursor: pointer;
}

.articles-nav .nav-item.is-selected, .articles-nav .nav-item:hover {
    color: #0E77FF;
}

.articles-nav .nav-item:last-child {
    border: 0;
}

.box-list {
    display: none;
}

.box-list.is-selected {
    display: flex;
}