Cookies are text files, often encrypted, stored in your browser. They are created when a user’s browser loads a given website: the website sends information to the browser, which then creates a text file. Each time the user returns to the same site, the browser retrieves this file and sends it to the website’s server. There are two types of cookies, which have different purposes: technical cookies and advertising cookies:

Technical cookies are used throughout your browsing experience, to facilitate it and to perform certain functions. For example, a technical cookie may be used to remember the answers entered in a form or the user’s preferences regarding the language or layout of a website, when such options are available.
Advertising cookies may be created not only by the website on which the user is browsing, but also by other websites displaying advertisements, announcements, widgets or other elements on the page displayed. These cookies can be used to carry out targeted advertising, i.e. advertising determined according to the user’s navigation.
We use technical cookies and advertising cookies. We use Google Analytics which is a statistical tool for audience analysis that generates a cookie to measure the number of visits, the number of pages viewed and the activity of visitors. Your IP address is also collected to determine the city from which you connect. We remind you that it is possible to oppose the deposit of technical and advertising cookies by configuring your browser.

You can find more information on the use of cookies on the CNIL website:
However, such a refusal could prevent the proper functioning of the website.

Configure the restrictions relating to your cookies:
You can find out how to restrict your cookies in the Help menu of your browser: