.newsCategory {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 25px;
    border-bottom: 1px solid #d9d9d9;
}

.newsCategory button {
    position: relative;
    padding: 10px 24px 12px;
    border: none;
    background: transparent;
    color: #555;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.2s ease;
}

/* マウスを乗せたとき */
.newsCategory button:hover {
    color: #333;
}

/* 選択中 */
.newsCategory button.active {
    color: #333;
    font-weight: 700;
}

/* 選択中の下線 */
.newsCategory button.active::after {
    content: "";
    position: absolute;
    left: 12px;
    right: 12px;
    bottom: -1px;
    height: 3px;
    background: #333;
}