What is Aspect Ratio?

Aspect ratio is the proportional relationship between an element’s width and height, commonly expressed as 16:9, 4:3, or 1:1.

When to use Aspect Ratios?

- To maintain consistent media framing across breakpoints

- For responsive containers like videos, images, and cardsWhen not to fix Aspect Ratios? - When content must expand freely without cropping or letterboxingWhat is the anatomy of Aspect Ratios?

- Fixed ratios (e.g., 16:9) vs. fluid ratios

- Letterboxing, pillarboxing, and cropping behavior

- CSS tools: aspect-ratio, object-fit, and containers