When a border is around an object, you can adjust the corners to make them appear rounder with softer edges. If you have added effects such as a shadow, the shadow will now appear rounded. And soften the corners of an image through rounder corners.
Here's how:
Click any object on your website page—content, image, media, apps, social, or a document.
The settings panel opens on the right side of the Website Builder.
Click the icon to open the Corner settings.
The corners of the box are adjusted.