使用了边框实用工具快速样式的边框和边框半径的元素。非常适合图像,按钮或任何其他元素。

边框

使用边框实用工具添加或者删除元素的边框。你可以直接添加所有边框,或者一次只添加一条边框。

添加边框

<span class="border"></span>
<span class="border-top"></span>
<span class="border-end"></span>
<span class="border-bottom"></span>
<span class="border-start"></span>

消除边框

<span class="border-0"></span>
<span class="border-top-0"></span>
<span class="border-end-0"></span>
<span class="border-bottom-0"></span>
<span class="border-start-0"></span>

边框颜色

使用基于主题颜色构建的实用工具更改边框颜色。

<span class="border border-primary"></span>
<span class="border border-secondary"></span>
<span class="border border-success"></span>
<span class="border border-danger"></span>
<span class="border border-warning"></span>
<span class="border border-info"></span>
<span class="border border-light"></span>
<span class="border border-dark"></span>
<span class="border border-white"></span>

边框宽度

<span class="border border-1"></span>
<span class="border border-2"></span>
<span class="border border-3"></span>
<span class="border border-4"></span>
<span class="border border-5"></span>

边框圆角

向元素添加类,使其易于圆角美化。

Example rounded image 75x75 Example top rounded image 75x75 Example right rounded image 75x75 Example bottom rounded image 75x75 Example left rounded image 75x75 Completely round image 75x75 Rounded pill image 150x75
<img src="..." class="rounded" alt="...">
<img src="..." class="rounded-top" alt="...">
<img src="..." class="rounded-end" alt="...">
<img src="..." class="rounded-bottom" alt="...">
<img src="..." class="rounded-start" alt="...">
<img src="..." class="rounded-circle" alt="...">
<img src="..." class="rounded-pill" alt="...">

边框圆角大小

对较大或较小的圆角可以使用缩放类。大小的范围从 03,可以通过修改实用工具的API来配置。

Example non-rounded image 75x75 Example small rounded image 75x75 Example default rounded image 75x75 Example large rounded image 75x75
<img src="..." class="rounded-0" alt="...">
<img src="..." class="rounded-1" alt="...">
<img src="..." class="rounded-2" alt="...">
<img src="..." class="rounded-3" alt="...">