CSS border-top-right-radius

The CSS border-top-right-radius property is used when adding rounded corners to your borders. This property allows you to set the border radius on the top-right corner.

The border-top-right-radius property can be used in conjunction with the border property (or another border-related property) in order to set the actual border, however, it can also be used without explicitly setting those properties. For example, if you've set a background color for the element, the background color will be rounded at the corners (even if you don't explictly set a border property).

Syntax

Or:

See below for a more detailed explanation of the accepted values.

Possible Values

Values/Syntax

The possible values for this property are:

Explanation of the Values

<length>

Specifies the radius using a fixed length, for example, 10px.

<percentage>

Specifies the radius using a percentage value, for example, 10%.

Explanation of the Syntax

You can provide either one or two values:

• If you provide only one value, it will determine the radius of both the horizontal radius and the vertical radius.
• If you provide two values, the first value determines the horizontal radius, and the second value determines the vertical radius.

In addition, all CSS properties also accept the following CSS-wide keyword values as the sole component of their property value:

initial

Represents the value specified as the property's initial value.

inherit

Represents the computed value of the property on the element's parent.

unset

This value acts as either inherit or initial, depending on whether the property is inherited or not. In other words, it sets all properties to their parent value if they are inheritable or to their initial value if not inheritable.

Basic Property Information

Example Code

Basic CSS

Working Example within an HTML Document

CSS Specifications

• The border-top-right-radius property is defined in CSS Backgrounds and Borders Module Level 3 (W3C Candidate Recommendation Snapshot)

Browser Support

Browser support for CSS properties can vary, particularly for newer or experimental features. Check current browser compatibility before using a property in production, especially when supporting older browsers.

The following table provided by Caniuse.com shows the level of browser support for this feature.

Initial Value

CSS properties have an initial value that applies when the property has not been explicitly set. The initial value is different from the value inherited from a parent element and may vary between properties.

Inheritance

Some CSS properties inherit their computed value from their parent element by default, while others do not. The inherit, initial, unset, and revert keywords can also be used to control how a property gets its value.

Vendor Prefixes

Most modern CSS properties use the standard, unprefixed syntax. Vendor-prefixed properties such as -webkit- are mainly relevant to older browser versions or specific features and should only be used when required by your browser support targets.