What are the different CSS units and when should I use them?
CSS offers various units like pixels (px), ems, rems, percentages, and viewport units. Pixels are fixed, while ems and rems are relative to font size, making them great for responsive design.
Can you explain the difference between em and rem?
Sure! 'em' is relative to the font size of its nearest parent, while 'rem' is relative to the root font size. This makes 'rem' more predictable for layout.
When should I use percentages instead of pixels?
Use percentages for responsive designs where you want elements to scale with their parent container. Pixels are better for fixed sizes.
What are viewport units?
Viewport units (vw, vh) are relative to the size of the viewport. 1vw is 1% of the viewport width, and 1vh is 1% of the viewport height, useful for responsive layouts.
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