边框
Utilities for controlling the style of an element's outline.
Use the outline-*
utilities to change the style of an element’s outline.
outline
outline-dashed
outline-dotted
outline-double
<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>
Use outline-none
to hide the default browser outline on focused elements.
It is highly recommended to apply your own focus styling for accessibility when using this utility.
Focus the input to see the expected behaviour
<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 ..." />
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.
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.
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.