CSS 1px border stroke breaks around border radius

Question

This is for web dev. When using a 1px border radius on a circle or a square with really rounded corners, the stroke starts to break. If we were to change it to 2px's it would get better and better the more px we add. But is there a way to fix this problem with a 1px stroke?

background: rgba(32, 32, 32, .9); height: 30px; width: 30px; border: 1px solid white; border-radius: 20px; :hover {  height: 300px;  width: 200px; } 

Images attached!

Answer 1

add box-shadow: 0 0 1px 0px white inset, 0 0 1px 0px white; that will give you the anti-aliasing you're looking for.

Answer 2

There isn't much you can do about this, unfortunately. That's up to the browser to determine how to render the sub-pixels that make up a curved 1px border. Some browsers will antialias it nicely, others will not.

The only reliable solution is to use images, which is so... 90s. Or something XD Point is, we shouldn't have to do things like that, but sometimes we have to either settle for imperfect rendering, or use outdated methods.