art {% if not loop.first %}collapsed{% endif %}"
                            aria-expanded="{% if loop.first %}true{% else %}false{% endif %}"
                            aria-controls="collapse{{ yearly_group.year }}">
                        {{ yearly_group.year }}
                        <span class="badge text-bg-secondary float-end align-middle">{{ yearly_group.articles|length }}</span>
                        <span class="visually-hidden">articles</span>
                    </button>
                <