轮廓样式

​基本用法

¥Basic usage

​设置轮廓样式

¥Setting the outline style

使用 outline-* 工具更改元素轮廓的样式。

¥Use the outline-* utilities to change the style of an element’s outline.

<button class="outline outline-2 outline-offset-2 ...">Button A</button>
<button class="outline-dashed outline-2 outline-offset-2 ...">Button B</button>
<button class="outline-dotted outline-2 outline-offset-2 ...">Button C</button>
<button class="outline-double outline-3 outline-offset-2 ...">Button D</button>

​删除轮廓

¥Removing outlines

使用 outline-none 隐藏聚焦元素上的默认浏览器轮廓。

¥Use outline-none to hide the default browser outline on focused elements.

强烈建议在使用此工具时应用你自己的聚焦样式以实现可访问性。

¥It is highly recommended to apply your own focus styling for accessibility when using this utility.

<input type="text"
  placeholder="Default focus style"
  class="..." />

<input type="text"
  placeholder="Custom focus style"
  class="focus:outline-none focus:ring focus:border-blue-500 ..." />

outline-none 工具是使用引擎盖下的透明轮廓实现的，以确保元素仍然对 Windows 高对比度模式 用户可见。

¥The outline-none utility is implemented using a transparent outline under the hood to ensure elements are still visibly focused to Windows high contrast mode users.

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​有条件地应用

​悬停、聚焦和其他状态

Tailwind lets you conditionally apply utility classes in different states using variant modifiers. For example, use hover:outline-dashed to only apply the outline-dashed utility on hover.

<div class="outline hover:outline-dashed">
  <!-- ... -->
</div>

For a complete list of all available state modifiers, check out the Hover, Focus, & Other States documentation.

​断点和媒体查询

You can also use variant modifiers to target media queries like responsive breakpoints, dark mode, prefers-reduced-motion, and more. For example, use md:outline-dashed to apply the outline-dashed utility at only medium screen sizes and above.

<div class="outline md:outline-dashed">
  <!-- ... -->
</div>

To learn more, check out the documentation on Responsive Design, Dark Mode and other media query modifiers.