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CSS 参考

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 音频参考 CSS 网页安全字体 CSS 备用字体 CSS 可动画属性 CSS 单位 CSS 像素到 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-width 属性


示例

设置边框宽度

div {border-width: thin;}
亲自试一试 »

更多“亲自试一试”的示例在下面。


定义和用法

border-width 属性设置元素四个边框的宽度。此属性可以具有一个到四个值。

示例

  • border-width: thin medium thick 10px;
    • 上边框为细线
    • 右边框为中等粗细
    • 下边框为粗线
    • 左边框为 10px

  • border-width: thin medium thick;
    • 上边框为细线
    • 右、左边框为中等粗细
    • 下边框为粗线

  • border-width: thin medium;
    • 上、下边框为细线
    • 右、左边框为中等粗细

  • border-width: thin;
    • 所有四个边框为细线

注意: 始终在 border-width 属性之前声明 border-style 属性。在设置宽度之前,元素必须具有边框。

查看演示 ❯

默认值 medium
继承
可动画 是。 了解有关可动画的信息 试一试
版本 CSS1
JavaScript 语法 object.style.borderWidth="1px 5px" 试一试

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-width 1.0 4.0 1.0 1.0 3.5


CSS 语法

border-width: medium|thin|thick|length|initial|inherit;

属性值

描述 演示
medium 指定中等粗细的边框。这是默认值 演示 ❯
thin 指定细线边框 演示 ❯
thick 指定粗线边框 演示 ❯
length 允许您定义边框的厚度。 了解有关长度单位的信息 演示 ❯
initial 将此属性设置为其默认值。 了解有关initial的信息
inherit 从其父元素继承此属性。 了解有关inherit的信息

更多示例

示例

将边框宽度设置为中等粗细

div {border-width: medium;}
亲自试一试 »

示例

将边框宽度设置为粗线

div {border-width: thick;}
亲自试一试 »

示例

将边框宽度设置为 1px

div {border-width: 1px;}
亲自试一试 »

示例

将边框宽度设置为 15px

div {border-width: 15px;}
亲自试一试 »

示例

将上、下边框宽度设置为 10px,将左、右边框宽度设置为 1px

div {border-width: 10px 1px;}
亲自试一试 »

相关页面

CSS 教程: CSS 边框

HTML DOM 参考: borderWidth 属性


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