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CSS 参考资料

CSS 参考 CSS 浏览器支持 CSS 选择器 CSS 伪元素 CSS 组合器 CSS 函数 CSS 参考听觉 CSS 网络安全字体 CSS 回退字体 CSS 可动画 CSS 单位 CSS PX-EM 转换器 CSS 颜色 CSS 颜色值 CSS 默认值 CSS 实体

CSS 属性

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-start-radius 属性


示例

向某些元素的块开始和内联开始侧添加圆角

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

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

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

#example4 {
  background-color: lightblue;
  border-start-start-radius: 50%;
  writing-mode: vertical-rl;
}
自己尝试 »

下面有更多“自己尝试”示例。


定义和用法

The border-start-start-radius 属性定义元素的块开始和内联开始侧之间角的半径。

注意:相关的 CSS 属性 writing-modetext-orientationdirection 定义块和内联方向。这就是这些属性也会影响 border-start-start-radius 属性结果的原因。对于英文页面,内联方向是从左到右,块方向是向下。

如果 border-start-start-radius 属性有两个值,则角将为椭圆形

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

如果 border-start-start-radius 属性有一个值,则角将为圆形

  • border-start-start-radius: 50px;

CSS border-start-start-radius 属性与 CSS 属性 border-bottom-left-radiusborder-bottom-right-radiusborder-top-left-radiusborder-top-right-radius 非常相似,但 border-start-start-radius 属性取决于块和内联方向。

显示演示 ❯

默认值 0
继承
可动画 是。 了解可动画 尝试一下
版本 CSS3
JavaScript 语法 object.style.borderStartStartRadius="50px" 尝试一下

浏览器支持

表中的数字指定完全支持该属性的第一个浏览器版本。

属性
border-start-start-radius 89.0 89.0 66.0 15.0 75.0


CSS 语法

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

属性值

描述 演示
0 默认值。 演示 ❯
length 定义块开始和内联开始处的角的形状。 了解长度单位 演示 ❯
% 以元素在相应轴上的长度的百分比定义块开始和内联开始处的角的形状。 演示 ❯
initial 将此属性设置为其默认值。 了解initial
inherit 从其父元素继承此属性。 了解inherit

更多示例

使用 direction 属性

块方向和内联方向开始处圆角的位置受 direction 属性影响

#example1 {
  border: 2px solid red;
  direction: rtl;
  border-start-start-radius: 25px;
}
自己尝试 »

使用 writing-mode 属性

块方向和内联方向开始处圆角的位置受 writing-mode 属性影响

#example2 {
  border: 2px solid red;
  writing-mode: vertical-rl;
  border-start-start-radius: 25px;
}
自己尝试 »

相关页面

CSS 教程: CSS 圆角

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

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

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

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

CSS direction 属性: CSS Direction 属性

CSS text-orientation 属性: CSS Text-orientation 属性

CSS writing-mode 属性: CSS Writing-mode 属性


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