Error 404 / Erreur 404

First time visit: View without clicking anything

Every page should have a clearly defined heading, known as a "H1" (Heading 1).

A `H1` is the main heading of the page. It helps accessibility by allowing uses to
skip to the main content of the page. It helps all users identify what the page is about. 
It helps SEO by giving special emphasis to the topic of the page.

It is not enough to simply include large text. Headings must be coded 
[semantically](https://html.com/semantic-markup/) as `<h1>` tags, like so:

```html
<h1>This is a heading</h1>
```

Note that headings must contain some machine readable text to be considered valid. 
For example, this heading is not valid:

```html
<h1>
    <img src="company-logo.png">
</h1>
``` 

But with the addition of `alt` text, this heading is valid:

```html
<h1>
    <img src="company-logo.png" alt="About Company Inc.">
</h1>
``` 

Generally we recommend you just use plain text for your headings.
See [Technique H42](https://www.w3.org/TR/WCAG20-TECHS/H42) for more details.

Title / URL	Issues
Error 404 / Erreur 404www.tatc.gc.ca/invented-url-for-404-page	1
First time visit: View without clicking anythingwww.tatc.gc.ca/index.php	1
Error 404 / Erreur 404www.tatc.gc.ca/index.php	1

Ensure every page contains a top-level heading

Transportation Appeal Tribunal of Canada

Where this issue has occurred