this post was submitted on 22 Nov 2023
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CSS

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Smooth rounded corners or continuous corners (used throughout iOS) can be easily achieved in Figma and other design software. I’m fairly sure there’s no way to do this simply on the web and it drives me mad. Do y’all know of any ways to do this that can actually be used in production?

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[–] [email protected] 4 points 1 year ago* (last edited 1 year ago) (1 children)

This always works for me:

border-radius: 25px;

Just change the value to whatever you need.

[–] silas 1 points 1 year ago (2 children)

These are just standard rounded corners, I’m talking about the type of smooth rounded corners used in iOS

[–] [email protected] 6 points 1 year ago (1 children)

Sounds like you wanna get more specific about your curves, you'll need to look into bezier curves for corners. Looks like it should be possible via masking: https://stackoverflow.com/questions/28583988/css-borders-with-bezier-curves#28613988

[–] silas 1 points 1 year ago (1 children)

Thanks! Didn’t think of bezier curves in relation to this, that’s a good search term.

Highly doubt it, but you know if it’s possible to do this with a border and box-shadow on the element?

[–] [email protected] 1 points 1 year ago (1 children)

Not sure, but worst case scenario you could have a second div z-indexed behind the custom shaped one that you do a standard border radius and blur on and it would look pretty close to being a shadow that fits. Obviously that's messier, but it's a possibility.

[–] silas 1 points 1 year ago

Oh nice, yeah that could still be pretty convincing. I might even be able to get away with an ::after instead. I’ll mess around with it, thanks!

[–] [email protected] 1 points 1 year ago (1 children)

I’m pretty sure you can just increase the value to get that, but maybe not.

[–] silas 3 points 1 year ago (1 children)

Nope, It’s kinda confusing because it looks very similar. Smooth corners are actually a different mathematical calculation than the standard ones from the border-radius property, that’s why I’m kinda doubtful there’s an easy way to do it

[–] [email protected] 1 points 1 year ago (1 children)

Ok, I can see that now. I had to stare at it a while like an autostereogram to see it. It’s late here.

[–] silas 2 points 1 year ago (1 children)

Yeah I don’t blame you, I even uploaded the wrong example photo at first lol

[–] [email protected] 1 points 1 year ago

Oh good, my eyes aren’t that bad yet. Thanks for letting me know!

[–] [email protected] 4 points 1 year ago
[–] [email protected] 2 points 1 year ago

Svg path clipping / masking.

[–] [email protected] 1 points 1 year ago (1 children)
[–] silas 1 points 1 year ago

That’s just standard rounded corners, I’m talking about squircles or smooth rounded corners which have a slightly different appearance.