Examples

Basic example

Useoutline oroutline-<number> utilities likeoutline-2 andoutline-4 to set the width of an element's outline:

<button class="outline outline-offset-2 ...">Button A</button>
<button class="outline-2 outline-offset-2 ...">Button B</button>
<button class="outline-4 outline-offset-2 ...">Button C</button>

Applying on focus

Prefix anoutline-width utility with a variant likefocus:* to only apply the utility in that state:

<button class="outline-offset-2 outline-sky-500focus:outline-2 ...">Save Changes</button>

Learn more about using variants in thevariants documentation.

Using a custom value

Use theoutline-[<value>] syntax to set the outline width based on a completely custom value:

<div class="outline-[2vw] ...">
  <!-- ... -->
</div>

For CSS variables, you can also use theoutline-(length:<custom-property>) syntax:

<div class="outline-(length:--my-outline-width) ...">
  <!-- ... -->
</div>

This is just a shorthand foroutline-[length:var(<custom-property>)] that adds thevar() function for you automatically.

Responsive design

Prefix anoutline-width utility with a breakpoint variant likemd: to only apply the utility at medium screen sizes and above:

<div class="outlinemd:outline-2 ...">
  <!-- ... -->
</div>

Learn more about using variants in thevariants documentation.