Accessibility policy

Display size

Texts of the website have a relative font size, that is expandable as needed.


If you want to change the display size of texts:

  • With various browsers: press the Ctrl key + mouse wheel simultaneously
  • With Internet Explorer: go to the "View"-"Text Size" menu and choose the display size you want
  • With Mozilla Firefox, Safari, Chrome: press the Ctrl and + keys to zoom in and Ctrl + - to decrease the display size
  • With Opera: press the + or - keys on the numeric keypad. Or go to the "View " - "Zoom" menu and select the font size you want to display

Browsing help

Skip links

Menu placed at the beginning of the document. These links are provided, upon loading the page, to directly access a given page (content, main menu, search engine, etc.) without having to wade through unwanted information.

These links facilitate access to the website for the disabled people, including the blind one: they allow them to place themselves directly to the desired location.

Browsing with the key Tab

Press the Tab key and repeat until you select the desired link, confirm by pressing the "Enter" key

Accesskeys (keyboard shortcuts)
  • s = Go to content
  • 0 = Go to "Accessibility policy"
  • 1 = Go to "home page"
  • 3 = Go to the site map
  • 7 = Contact the webmaster


  • Chrome, Mozilla Firefox, Safari, Netscape (Windows): press the Shift - Alt keys simultaneously, as well as one of the Accesskeys of the keyboard (not the one of the numeric keypad). You will go directly to the desired location.
    Note: on a standard keyboard "QWERTY" or "QWERTZ (German), the Shift key is unnecessary to trigger the accesskey.
  • Internet Explorer (Windows): press the Alt key and one of the accesskey of the keyboard simultaneously (not the one of the numeric keypad), then press the Enter key to go to the desired location.
  • Opera (Windows, Mac and Linux): Press the Esc + Shift keys and accesskey
  • Safari, Internet Explorer (Mac OS X): Press the Ctrl key and accesskey
  • Mozilla, Netscape (Mac OS X): Press the Ctrl key and accesskey
  • Mozilla Firefox, Galeon (linux): Press the Alt key and accesskey
  • Konqueror (Linux): Press the Ctrl key and accesskey successively
  • Older browsers (Netscape 4, Camino, Galeon, Konqueror before version 3.3.0, Omniweb, Safari before version 1.2, Opera Windows / Linux before version 7) do not support accesskeys.

Design Philosophy

The principle is to provide web content to which you can equivalently access, regardless of one's material, environment, browser, deficiencies or culture (language).

A web page must be considered and designed so that the content is fully independent of how that content will be designed on a screen or any device (mobile phone, TV, search engine, printer, Braille page, etc).

This distinction between content (the part that must be universally accessible is the HTML document) and layout (the part that goes only to graphic media is CSS) can transmit the same message to each user, and this, regardless of his/her tool.

(X) HTML and standards tend to adopt more and more this way to dinstinct content (HTML) / layout (CSS) for many other reasons.

CLE aims to address all its visitors whoever they are, and applies literally the principle of distinction between the HTML and CSS layout.