CSS Font Size Variables

Font size variables in CSS, defined in the :root selector, let you create responsive typography that's both accessible and visually consistent.

Font Size Variables

Here’s a quick overview of the default font size variables:

Caution

Customizing spacing using the `--S*` variables may impact the responsive layout. Default values utilize the `clamp` function to adapt spacing based on viewport size, maintaining proportions and alignment. Modifying these values might result in spacing inconsistencies.

Variable	Description	Default Value Range
`--F1`	Font size variable for 3 extra small text	0.55rem - 0.66rem
`--F2`	Font size variable for 2 extra small text	0.61rem - 0.8rem
`--F3`	Font size variable for extra small text	0.69rem - 0.96rem
`--F4`	Font size variable for small text	0.78rem - 1.15rem
`--F5`	Font size variable for medium text	0.88rem - 1.38rem
`--F6`	Font size variable for large text	0.98rem - 1.65rem
`--F7`	Font size variable for extra large text	1.11rem - 1.98rem
`--F8`	Font size variable for 2 extra large text	1.25rem - 2.38rem
`--F9`	Font size variable for 3 extra large text	1.4rem - 2.85rem

Customizing Font Sizes

You can override these variables to match your design. For example:

:root {
  --CF1: 2px;
  --CF2: 4px;
  --CF3: 8px;
  --CF4: 12px;
  --CF5: 16px;
  --CF6: 24px;
  --CF7: 32px;
  --CF8: 48px;
  --CF9: 72px;
}

These customizations adjust the font sizes in your Text, Heading, and Link components.

Tips for Best Results

Keep It Consistent: Use default values when possible for a cohesive design.
Accessibility First: Avoid extremely small sizes (--F1, --F2) unless absolutely necessary, and ensure text meets contrast guidelines.
Preview and Test: Always check your design on various devices to confirm legibility and visual balance.

Conclusion

Font size variables simplify creating responsive, accessible typography. Customize thoughtfully to balance design, readability, and user experience. Start with defaults, tweak where needed, and keep accessibility at the forefront.

Enjoy crafting your unique, user-friendly designs! 🎨