In: art.

Typography

The art and technique of arranging type to make written language legible, readable and appealing when displayed.
The arrangement of type involves selecting typefaces, point sizes, line lengths, line-spacing (leading), and letter-spacing (tracking), and adjusting the space between pairs of letters (kerning).

Assorted apps

Tailwind CSS typography

https://github.com/timack/tailwind-typography-playground
https://github.com/tailwindlabs/tailwindcss-typography
https://tailwind-tools.com/typography

Modern fluid typography editor

https://github.com/codeAdrian/modern-fluid-typography-editor

Articles

Elements of Typographic style applied to the Web

http://webtypography.net/toc

How to use kerning & tracking

https://iamsteve.me/blog/entry/how-to-use-kerning-tracking

Responsive and fluid typography with VH and VW units

Embracing fluid typography might be easier than you think. It has wide browser support, is simple to implement and can be achieved without losing control over many important aspects of design
https://smashingmagazine.com/2016/05/fluid-typograph

Precise control over responsive typography

Create fluid responsive typography with calc and viewport units
https://madebymike.com.au/writing/precise-control-responsive-typography

Fluid type

Embracing the fluid & flexible aspect of responsive web design
https://trentwalton.com/2012/06/19/fluid-type

What is a typographic scale?

https://creativemarket.com/blog/typographic-scale