边框
用于控制元素边框宽度的实用工具。
| 类名 | 样式 |
|---|---|
border | border-width: 1px; |
border-<number> | border-width: <number>px; |
border-(length:<custom-property>) | border-width: var(<custom-property>); |
border-[<value>] | border-width: <value>; |
border-x | border-inline-width: 1px; |
border-x-<number> | border-inline-width: <number>px; |
border-x-(length:<custom-property>) | border-inline-width: var(<custom-property>); |
border-x-[<value>] | border-inline-width: <value>; |
border-y | border-block-width: 1px; |
border-y-<number> | border-block-width: <number>px; |
border-y-(length:<custom-property>) | border-block-width: var(<custom-property>); |
border-y-[<value>] | border-block-width: <value>; |
border-s | border-inline-start-width: 1px; |
border-s-<number> | border-inline-start-width: <number>px; |
border-s-(length:<custom-property>) | border-inline-start-width: var(<custom-property>); |
border-s-[<value>] | border-inline-start-width: <value>; |
border-e | border-inline-end-width: 1px; |
border-e-<number> | border-inline-end-width: <number>px; |
border-e-(length:<custom-property>) | border-inline-end-width: var(<custom-property>); |
border-e-[<value>] | border-inline-end-width: <value>; |
border-t | border-top-width: 1px; |
border-t-<number> | border-top-width: <number>px; |
border-t-(length:<custom-property>) | border-top-width: var(<custom-property>); |
border-t-[<value>] | border-top-width: <value>; |
border-r | border-right-width: 1px; |
border-r-<number> | border-right-width: <number>px; |
border-r-(length:<custom-property>) | border-right-width: var(<custom-property>); |
border-r-[<value>] | border-right-width: <value>; |
border-b | border-bottom-width: 1px; |
border-b-<number> | border-bottom-width: <number>px; |
border-b-(length:<custom-property>) | border-bottom-width: var(<custom-property>); |
border-b-[<value>] | border-bottom-width: <value>; |
border-l | border-left-width: 1px; |
border-l-<number> | border-left-width: <number>px; |
border-l-(length:<custom-property>) | border-left-width: var(<custom-property>); |
border-l-[<value>] | border-left-width: <value>; |
divide-x | & > :not(:last-child) { border-inline-start-width: 0px; border-inline-end-width: 1px; } |
divide-x-<number> | & > :not(:last-child) { border-inline-start-width: 0px; border-inline-end-width: <number>px; } |
divide-x-(length:<custom-property>) | & > :not(:last-child) { border-inline-start-width: 0px; border-inline-end-width: var(<custom-property>); } |
divide-x-[<value>] | & > :not(:last-child) { border-inline-start-width: 0px; border-inline-end-width: <value>; } |
divide-y | & > :not(:last-child) { border-top-width: 0px; border-bottom-width: 1px; } |
divide-y-<number> | & > :not(:last-child) { border-top-width: 0px; border-bottom-width: <number>px; } |
divide-y-(length:<custom-property>) | & > :not(:last-child) { border-top-width: 0px; border-bottom-width: var(<custom-property>); } |
divide-y-[<value>] | & > :not(:last-child) { border-top-width: 0px; border-bottom-width: <value>; } |
divide-x-reverse | --tw-divide-x-reverse: 1; |
divide-y-reverse | --tw-divide-y-reverse: 1; |
使用 border 或 border-<number> 实用工具 (如 border-2 和 border-4) 来设置元素所有边的边框宽度
border
border-2
border-4
border-8
<div class="border border-indigo-600 ..."></div><div class="border-2 border-indigo-600 ..."></div><div class="border-4 border-indigo-600 ..."></div><div class="border-8 border-indigo-600 ..."></div>使用 border-r 和 border-t-4 等实用工具来设置元素一侧的边框宽度
border-t-4
border-r-4
border-b-4
border-l-4
<div class="border-t-4 border-indigo-500 ..."></div><div class="border-r-4 border-indigo-500 ..."></div><div class="border-b-4 border-indigo-500 ..."></div><div class="border-l-4 border-indigo-500 ..."></div>使用 border-x 和 border-y-4 等实用工具来同时设置元素两侧的边框宽度
border-x-4
border-y-4
<div class="border-x-4 border-indigo-500 ..."></div><div class="border-y-4 border-indigo-500 ..."></div>使用 border-s 和 border-e-4 等实用工具来设置 border-inline-start-width 和 border-inline-end-width 逻辑属性，这些属性根据文本方向映射到左边框或右边框
从左到右
从右到左
<div dir="ltr"> <div class="border-s-4 ..."></div></div><div dir="rtl"> <div class="border-s-4 ..."></div></div>使用 divide-x 和 divide-y-4 等实用工具在子元素之间添加边框
<div class="grid grid-cols-3 divide-x-4"> <div>01</div> <div>02</div> <div>03</div></div>如果你的元素是反向顺序 (例如使用 flex-row-reverse 或 flex-col-reverse)，请使用 divide-x-reverse 或 divide-y-reverse 实用工具来确保边框添加到每个元素的正确侧
<div class="flex flex-col-reverse divide-y-4 divide-y-reverse divide-gray-200"> <div>01</div> <div>02</div> <div>03</div></div>使用 border-[<value>] 语法 来设置边框宽度基于完全自定义的值
<div class="border-[2vw] ..."> <!-- ... --></div>对于 CSS 变量，你还可以使用 border-(length:<custom-property>) 语法
<div class="border-(length:--my-border-width) ..."> <!-- ... --></div>这只是一个简写形式 border-[lengthvar(<custom-property>)] 它会自动为你添加 var() 函数。
前缀一个 border-width 实用工具 使用断点变体 (如 md:) 以仅在以下情况下应用实用工具中等 屏幕尺寸及以上
<div class="border-2 md:border-t-4 ..."> <!-- ... --></div>在 变体文档 中了解有关使用变体的更多信息。