“Morph” (MORF
in CSS) is an axis found in some variable fonts that can be used to unconventionally change the shape, size, and position of elements that make up a letterform.
The Google Fonts CSS v2 API defines the axis as:
Default: | Min: | Max: | Step: |
---|---|---|---|
0 | 0 | 60 | 1 |
In the Kablammo font, moving along the axis from its minimum to maximum value animates the elements that are changing. Some glyphs use this to suggest actual movement as the axis is altered.