404: Page not found

404: Tudalen heb ei chanfod

General enquiries

All `id` attributes on a page must be unique, or accessible technologies used by the page 
can stop working.

## Example

The duplicate `id` here makes it unclear which label belongs to which input field:

```html
<label for="name">Your name</label>
<input id="name">

<label for="name">Company name</label>
<input id="name">
```

As a result, accessible technologies like screen readers can fail to read out the 
correct text, or may read out no text at all.

Similar issues can occur when using `aria-labelledby` and `aria-describedby`.

## How to fix

Ensure all `id` attributes on a page are unique. 

## More information

See [Technique H93](https://www.w3.org/TR/2016/NOTE-WCAG20-TECHS-20161007/H93) 
for more information.

	Title / URL	Issues
	404: Page not foundwww.caerdydd.gov.uk/ENG/404/Pages/default.aspx?requestUrl=https://www.caerdydd.gov.uk/ENG/resident/hubs-and-housing-offices/Pages/Hubs.aspx	2
	404: Tudalen heb ei chanfodwww.caerdydd.gov.uk/CYM/404/Pages/default.aspx	2
	404: Page not foundwww.caerdydd.gov.uk/ENG/404/Pages/default.aspx?requestUrl=https://www.caerdydd.gov.uk/invented-url-for-404-page	2
	404: Page not foundwww.caerdydd.gov.uk/ENG/404/Pages/default.aspx	2
	404: Page not foundwww.caerdydd.gov.uk/ENG/404/Pages/default.aspx?requestUrl=https://www.caerdydd.gov.uk/ENG/resident/hubs-and-housing-offices/Pages/default.aspx	2
	General enquirieswww.caerdydd.gov.uk/ENG/Home/Contact-us/General-enquiries/Pages/default.aspx	2

Fix duplicate IDs

Cardiff Council

Where this issue has occurred