A while ago, I was inspecting facebook.com home page feed to learn and see how they build things out. I’m always curious to see how people write CSS. I noticed a very, very interesting border-radius value for the card component in the main feed. I shared the following tweet about this little discovery. Then, I received this reply from Miriam Suzanne: is it always 8px? That math looks like a toggle
![Conditional Border Radius In CSS](https://cdn-ak-scissors.b.st-hatena.com/image/square/68b94106d5833f650fa9fb078e42a896ff15f8df/height=288;version=1;width=512/https%3A%2F%2Fishadeed.com%2Fassets%2Fconditional-border-rad%2Ftwitter-card.jpg)