.chapter-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: nowrap;
    gap: 10px;
    padding: 10px 0;
    font-family: "Segoe UI", sans-serif;
    overflow-x: auto;
}

.index-container-btn {
    flex-shrink: 0;
    padding: 6px 14px;
    background-color: #007bff;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    border: none;
    font-size: 14px;
    transition: background-color 0.3s ease;
    white-space: nowrap;
}

.index-container-btn:hover {
    background-color: #0056b3;
}

.chapter-pagination select {
    flex: 1;
    padding: 6px 10px;
    font-size: 14px;
    border-radius: 4px;
    border: 1px solid #ccc;
    background-color: #f9f9f9;
    width: auto;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
}