What are viewport units in CSS and how do they work?

What are viewport units in CSS and how do they work?

Viewport units in CSS are relative units that are based on the size of the viewport. They include vw (viewport width), vh (viewport height), vmin (minimum of vw or vh), and vmax (maximum of vw or vh). For example, 1vw is equal to 1% of the viewport's width.

Can you give me an example of how to use them in a CSS rule?

Sure! You can use viewport units to set the width of a div like this: div { width: 50vw; } This means the div will take up 50% of the viewport's width.

Are there any drawbacks to using viewport units?

Yes, one drawback is that viewport units can lead to unexpected layouts on smaller screens, especially if content is not responsive. It's important to test across different devices.

How do viewport units compare to other units like percentages or pixels?

Viewport units are more flexible than pixels because they adapt to the size of the viewport, while percentages are relative to the parent element's size. This can make viewport units more suitable for responsive designs.