The "em" unit in CSS - relative font sizes - YouTube
px - em - % - pt - keyword | CSS-Tricks - CSS-Tricks
css - iOS Safari Changing Font Size, webkit-text-size-adjust has no effect - Stack Overflow
Font Size Idea: px at the Root, rem for Components, em for Text Elements | CSS-Tricks - CSS-Tricks
A deep study on CSS Units
CSS Font-Size: em vs. px vs. pt vs. percent / Kyle Schaeffer
CSS Units Tutorial – WebNots
EM or PX : Which One is Right for Your Email - Email Uplers
Understanding CSS Units (PX, EM, REM) and how to use them. – Amey Raut
CSS Font-Size: em vs. px vs. pt vs. percent / Kyle Schaeffer
CSS/Training/fonts - Web Education Community Group
A CSS unit cheat sheet with explanations of each unit.
Understanding the basic concepts behind the use of pixels, em and rem.
Control font sizes, line spacing, and word spacing - Build Your First Web Pages With HTML and CSS - OpenClassrooms
Deep dive CSS: font metrics, line-height and vertical-align - Vincent De Oliveira
CSS Length Units Lesson | Uxcel
CSS font-size Property - GeeksforGeeks
Meaning of Font Size
rem vs em: Understanding the CSS Unit Basics
Set font-size to 0.75em; (25% smaller) in HTML and CSS
Why designers should move from px to rem (and how to do that in Figma) | by Christine Vallaure | UX Collective
html - CSS: Is font-size not acurrate? - Stack Overflow
font-size property in CSS (Hindi) - YouTube
Understanding Font sizing in CSS: em - px - pt - percent - rem
