CSS Border Radius Generator
Create rounded corners, circles, and pill shapes with a visual CSS border-radius generator.
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Tags: CSS border radius generator, rounded corners CSS, border-radius tool
CSS Border Radius Generator is one of the most-used CSS properties, but its full syntax — including the 8-value elliptical form — is rarely explored. A generator makes it visual, and the results can range from simple rounded rectangles to organic blob shapes. --- What is Basic Usage? --- What is Shorthand Values? | Values | Effect | |---|---| | One value () | All four corners | | Two values () | TL+BR, TR+BL | | Three values () | TL, TR+BL, BR | | Four values () | TL, TR, BR, BL (clockwise) | --- What is Common Shapes? Circle Pill / Rounded Button Squircle-like (Rounded Square) One Rounded Corner --- What is The 8-Value Elliptical Syntax? Each corner can have a different horizontal and vertical radius. The syntax separates them with a slash: --- What is the difference between Percentage…
Frequently Asked Questions
How do I make rounded corners in CSS?
Use `border-radius` on any element: `border-radius: 8px` rounds all four corners equally. You can specify individual corners using the four-value shorthand (top-left, top-right, bottom-right, bottom-left), like `border-radius: 4px 8px 8px 4px`.
How do I make a perfect circle with CSS?
Apply `border-radius: 50%` to a square element (equal `width` and `height`). The 50% radius meets in the center on all four corners, creating a circle. For non-square elements, `50%` creates an ellipse instead.
What is the shorthand for border-radius?
The four-value shorthand follows the clock order: top-left, top-right, bottom-right, bottom-left. Two values set top-left/bottom-right together and top-right/bottom-left together. One value applies to all corners. The full 8-value syntax `a b c d / e f g h` sets horizontal and vertical radii independently per corner.
How do I make asymmetric rounded corners?
Use the 8-value syntax with a slash: `border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%`. The values before the slash are horizontal radii for each corner; the values after are vertical radii. This lets each corner's curve be non-circular (elliptical), enabling organic and blob shapes.
What is a pill shape in CSS?
A pill is a rectangle with fully rounded ends. Apply `border-radius: 9999px` (or any value larger than half the element's smallest dimension). The browser clamps the radius to 50% of the element's size, so using a large value is a safe way to guarantee pill-shaped rounding regardless of the element's dimensions.
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