What are the different CSS units and when should I use them?

What are the different CSS units and when should I use them?

CSS units are measurements used to define sizes, lengths, and spacing in web design. The main types are absolute units like pixels (px) and points (pt), and relative units like em, rem, and percentages. Absolute units are fixed, while relative units adapt to the user's settings.

Can you explain the difference between 'em' and 'rem' units?

Sure! 'em' units are relative to the font size of their nearest parent element, while 'rem' units are relative to the root element's font size. This means 'rem' provides more consistency across your layout.

When should I use percentages for widths?

Percentages are great for responsive design. They allow elements to scale based on their parent container's size, making your layout more flexible.

Are there any units I should avoid?

It's generally best to avoid using fixed units like pixels for layout purposes, as they can lead to less responsive designs. Instead, opt for relative units like em, rem, or percentages.