- Adds default minimum font size limits so that text does not become smaller than 14px/0.875rem/0.875em. The consequence will be that all fluid font sizes will be no smaller than 14px/0.875rem/0.875em in any viewport width.
- Users may define font-sizes that are smaller than 14px/0.875rem/0.875em. In this case the user-defined font size becomes the minimum. For example if a user defines 9px for a block, then the minimum font size for that block will be 9px.

- Min font size should not be greater than max font size.
- Round to 3 decimal places (JS)

- Rounding computed min and max values

…s in em

This is to keep it consistent with the original formula and ensure the fluid argument in clamp is working off a size relative to :root

Fixing formatting and grammar
Rolling back renaming $preset to $font_size in preference to a follow up.

Do  not clamp value if there is no min size and the font size is less than 14px

…font size to set the floor of the clamp() value.

…up if required as it requires extra logic.