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pxVsEmVsRemDo you choose the right unit for your CSS⁉️
Understanding
px,
em, and
rem is essential for building scalable and responsive designs.
1. px (Pixels)-
Fixed size.
- Doesn’t adapt to user preferences.
- Ideal for precise measurements like borders.
2. em (Relative to Parent)- Relative to the font size of the
parent element.
- Great for scaling elements within a component.
3. rem (Relative to Root)- Relative to the font size of the
root (:root).
- Ideal for consistent and global scaling.
When to Use?- Use
px for borders or fixed dimensions.
- Use
em for local scaling inside components.
- Use
rem for global consistency across the app.
💡
Bonus: Combine `
rem for base sizing and
em` for internal adjustments!
Next Post: Viewport Units (vw, vh, vmin, vmax)