Aspect Ratio in CSS ☠️🤯 Aspect Ratio Animation: 16/9 💯 For example, a YouTube video always stays in 16:9 shape - even on a small phone or a big laptop. It never looks weird or stretched. CSS aspect-ratio: 16/9; just tells a box: "Stay in this shape, no matter how big or small you are." `aspect-ratio: 16/9;` sets a container's aspect ratio to 16:9, maintaining that width-to-height ratio. 👇 Syntax: .container { aspect-ratio: 16/9; } ❤️ Hit the heart icon and show your love to this video 💙 | 📲