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CSS References

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CSS Properties

accent-color align-content align-items align-self all animation animation-delay animation-direction animation-duration animation-fill-mode animation-iteration-count animation-name animation-play-state animation-timing-function aspect-ratio backdrop-filter backface-visibility background background-attachment background-blend-mode background-clip background-color background-image background-origin background-position background-position-x background-position-y background-repeat background-size block-size border border-block border-block-color border-block-end border-block-end-color border-block-end-style border-block-end-width border-block-start border-block-start-color border-block-start-style border-block-start-width border-block-style border-block-width border-bottom border-bottom-color border-bottom-left-radius border-bottom-right-radius border-bottom-style border-bottom-width border-collapse border-color border-end-end-radius border-end-start-radius border-image border-image-outset border-image-repeat border-image-slice border-image-source border-image-width border-inline border-inline-color border-inline-end border-inline-end-color border-inline-end-style border-inline-end-width border-inline-start border-inline-start-color border-inline-start-style border-inline-start-width border-inline-style border-inline-width border-left border-left-color border-left-style border-left-width border-radius border-right border-right-color border-right-style border-right-width border-spacing border-start-end-radius border-start-start-radius border-style border-top border-top-color border-top-left-radius border-top-right-radius border-top-style border-top-width border-width bottom box-decoration-break box-reflect box-shadow box-sizing break-after break-before break-inside caption-side caret-color @charset clear clip clip-path color color-scheme column-count column-fill column-gap column-rule column-rule-color column-rule-style column-rule-width column-span column-width columns content counter-increment counter-reset counter-set cursor direction display empty-cells filter flex flex-basis flex-direction flex-flow flex-grow flex-shrink flex-wrap float font @font-face font-family font-feature-settings font-kerning font-size font-size-adjust font-stretch font-style font-variant font-variant-caps font-weight gap grid grid-area grid-auto-columns grid-auto-flow grid-auto-rows grid-column grid-column-end grid-column-start grid-row grid-row-end grid-row-start grid-template grid-template-areas grid-template-columns grid-template-rows hanging-punctuation height hyphens hyphenate-character image-rendering @import initial-letter inline-size inset inset-block inset-block-end inset-block-start inset-inline inset-inline-end inset-inline-start isolation justify-content justify-items justify-self @keyframes left letter-spacing line-height list-style list-style-image list-style-position list-style-type margin margin-block margin-block-end margin-block-start margin-bottom margin-inline margin-inline-end margin-inline-start margin-left margin-right margin-top marker marker-end marker-mid marker-start mask mask-clip mask-composite mask-image mask-mode mask-origin mask-position mask-repeat mask-size mask-type max-block-size max-height max-inline-size max-width @media min-block-size min-inline-size min-height min-width mix-blend-mode object-fit object-position offset offset-anchor offset-distance offset-path offset-position offset-rotate opacity order orphans outline outline-color outline-offset outline-style outline-width overflow overflow-anchor overflow-wrap overflow-x overflow-y overscroll-behavior overscroll-behavior-block overscroll-behavior-inline overscroll-behavior-x overscroll-behavior-y padding padding-block padding-block-end padding-block-start padding-bottom padding-inline padding-inline-end padding-inline-start padding-left padding-right padding-top page-break-after page-break-before page-break-inside paint-order perspective perspective-origin place-content place-items place-self pointer-events position @property quotes resize right rotate row-gap scale scroll-behavior scroll-margin scroll-margin-block scroll-margin-block-end scroll-margin-block-start scroll-margin-bottom scroll-margin-inline scroll-margin-inline-end scroll-margin-inline-start scroll-margin-left scroll-margin-right scroll-margin-top scroll-padding scroll-padding-block scroll-padding-block-end scroll-padding-block-start scroll-padding-bottom scroll-padding-inline scroll-padding-inline-end scroll-padding-inline-start scroll-padding-left scroll-padding-right scroll-padding-top scroll-snap-align scroll-snap-stop scroll-snap-type scrollbar-color tab-size table-layout text-align text-align-last text-decoration text-decoration-color text-decoration-line text-decoration-style text-decoration-thickness text-emphasis text-emphasis-color text-emphasis-position text-emphasis-style text-indent text-justify text-orientation text-overflow text-shadow text-transform text-underline-offset text-underline-position top transform transform-origin transform-style transition transition-delay transition-duration transition-property transition-timing-function translate unicode-bidi user-select vertical-align visibility white-space widows width word-break word-spacing word-wrap writing-mode z-index zoom



CSS border-start-end-radius Property


Example

Add rounded corners to the block-start and the inline-end sides of some elements:

#example1 {
  background-color: lightblue;
  border-start-end-radius: 50px;
}

#example2 {
  background-color: lightblue;
  border-start-end-radius: 50px 20px;
}

#example3 {
  background-color: lightblue;
  border-start-end-radius: 50%;
direction: rtl;
}

#example4 {
  background-color: lightblue;
  border-start-end-radius: 50%;
  writing-mode: vertical-rl;
}
Try it Yourself »

More "Try it Yourself" examples below.


Definition and Usage

The border-start-end-radius property defines the radius of the corner between the block-start and the inline-end sides of the element.

Note: The related CSS properties writing-mode, text-orientation and direction define block and inline directions. That is why these properties also affects the result of the border-start-end-radius property. For pages in English, inline direction is left to right and block direction is downward.

If the border-start-end-radius property has two values, the corner will be an ellipse:

  • border-start-end-radius: 50px 100px;

If the border-start-end-radius property has one value, the corner will be a circle:

  • border-start-end-radius: 50px;

The CSS border-start-end-radius property is very similar to CSS properties border-bottom-left-radius, border-bottom-right-radius, border-top-left-radius and border-top-right-radius, but the border-start-end-radius property is dependent on block and inline directions.

Show demo ❯

Default value: 0
Inherited: no
Animatable: yes. Read about animatable Try it
Version: CSS3
JavaScript syntax: object.style.borderStartEndRadius="50px" Try it

Browser Support

The numbers in the table specify the first browser version that fully supports the property.

Property
border-start-end-radius 89.0 89.0 66.0 15.0 75.0


CSS Syntax

border-start-end-radius: 0|length|initial|inherit;

Property Values

Value Description Demo
0 Default value. Demo ❯
length Defines the shape of the corner at block-start and inline-end. Read about length units Demo ❯
% Defines the shape of the corner at block-start and inline-end in percentange of length of element on corresponding axis. Demo ❯
initial Sets this property to its default value. Read about initial
inherit Inherits this property from its parent element. Read about inherit

More Examples

With direction property

The position of a rounded corner at the start in the block direction, and at the end in the inline direction, is affected by the direction property:

#example1 {
  border: 2px solid red;
  direction: rtl;
  border-start-end-radius: 25px;
}
Try it Yourself »

With writing-mode property

The position of a rounded corner at the start in the block direction, and at the end in the inline direction, is affected by the writing-mode property:

#example2 {
  border: 2px solid red;
  writing-mode: vertical-rl;
  border-start-end-radius: 25px;
}
Try it Yourself »

Related Pages

CSS tutorial: CSS Rounded Corners

CSS border-bottom-left-radius property: CSS Border-bottom-left-radius property

CSS border-bottom-right-radius property: CSS Border-bottom-right-radius property

CSS border-top-left-radius property: CSS Border-top-left-radius property

CSS border-top-right-radius property: CSS Border-top-right-radius property

CSS direction property: CSS Direction property

CSS text-orientation property: CSS Text-orientation property

CSS writing-mode property: CSS Writing-mode property


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