# `react-doctor/no-arbitrary-px-font-size`

Pixel arbitrary font size

- **Category:** Accessibility
- **Severity:** warn
- **Source:** oxlint-plugin-react-doctor
- **Framework:** global
- **Enabled when:** tailwind

## Validate the diagnostic

Confirm the reported code matches this rule before you edit it.

Confirm the reported code matches `react-doctor/no-arbitrary-px-font-size`. Compare it with the Before example and verify the same API, framework, and execution context. Treat it as a false positive only when one of those conditions differs.

## Compare the code

The corrected pattern shows a focused way to address the diagnostic.

### Reported pattern

```tsx
<p className="text-[13px]">Last updated today</p>
```

### Corrected pattern

```tsx
<p className="text-sm">Last updated today</p>
```

## How to fix

Use the corrected pattern as a reference. Preserve behavior that the rule does not require you to change.

### Copyable fix prompt

Copy this self-contained prompt into your coding agent after you confirm the diagnostic.

````text
Fix every confirmed `react-doctor/no-arbitrary-px-font-size` diagnostic in the current repository.

Required change:
- Use `rem` for arbitrary font sizes (`text-[0.8125rem]`, not `text-[13px]`) so text scales with the user's root font-size preference. Pixels stay fine for `border-*` / `outline-*`.

Reference transformation:

Before:
```tsx
<p className="text-[13px]">Last updated today</p>
```

After:
```tsx
<p className="text-sm">Last updated today</p>
```

Constraints:
- Confirm the reported code matches the Before pattern.
- Make the smallest change that fixes the root cause.
- Preserve behavior and interfaces unrelated to this diagnostic.
- Reuse existing project components, utilities, and conventions.
- Do not introduce render-phase side effects, render-phase state updates, or Hooks rule violations.
- Use existing brand assets, product facts, content, and design tokens.
- Do not invent claims, customer data, typefaces, or artwork.
- Preserve accessible names, focus order, keyboard behavior, and touch access not targeted by this rule.
- Adapt identifiers and framework details instead of copying blindly.
- Do not disable the rule or suppress matching code.
- Confirm this rule is enabled for the project: `tailwind`.

Verification:
- Run focused tests for the changed behavior.
- Run React Doctor and confirm this diagnostic no longer appears.
- Report the files changed and any checks you could not run.
````