Updated Drupal to 8.6. This goes with the following updates because it's possible...
[yaffs-website] / web / core / profiles / standard / config / optional / responsive_image.styles.narrow.yml
1 uuid: 8eb79e19-da57-4bd3-8304-4e0b5a147276
2 status: true
3 dependencies:
4   config:
5     - image.style.max_1300x1300
6     - image.style.max_650x650
7     - image.style.max_325x325
8 langcode: en
9 id: narrow
10 label: Narrow
11 image_style_mappings:
12   -
13     breakpoint_id: responsive_image.viewport_sizing
14     multiplier: 1x
15     image_mapping_type: sizes
16     image_mapping:
17       sizes: '(min-width: 1290px) 325px, (min-width: 851px) 25vw, (min-width: 560px) 50vw, 100vw'
18       sizes_image_styles:
19         - max_1300x1300
20         - max_650x650
21         - max_325x325
22 breakpoint_group: responsive_image
23 fallback_image_style: max_325x325