age.cover -%}
            {%- endif -%}

            {%- if page.article_header.background_image.gradient -%}
              {%- assign _header_background_image = page.article_header.background_image.gradient -%}
              {%- if _header_background_image_src -%}
                {%- assign _header_background_image = _header_background_image | append: ',' -%}
              {%- endif -%}
            {%- endif -%}

            {%- if _header_background_image_src -%}
              {%- include snippets/get-nav