1 habr: relative + padding-bottom:30% + img w/h 100%

AFTER-1 must be fully visible, right below the picture.

2 bbc: height:0 + padding-top:30% + img inset:0

AFTER-2 must be fully visible, right below the picture.

3 control: same but top/right/bottom/left longhands

AFTER-3 must be fully visible, right below the picture.

4 cnn: ::before ratio spacer + img inset:0

AFTER-4 must be fully visible, right below the picture.

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