Light and dark theme

You can read the site in a light or a dark theme. The control is in the header on every page, and also under the form on the login page.

Change the theme

The control has three options, shown as icons on a phone and narrow screens:

• "System" (a monitor): follow your device's own setting.
• "Light" (a sun): always light.
• "Dark" (a moon): always dark.

Press the one you want. It applies at once. With the keyboard, move to the control and use the arrow keys to move between the options.

Where it is

• On public pages, in the header, before "Log in". On a phone or a narrow window, open the menu ("Open menu") first.
• On the login page, under the form.
• On the payment page, at the foot.
• Once you are signed in, at the top right of your area, beside "Sign out".

How it is remembered

Your choice is stored in this browser for a year, and other tabs you have open follow it. Choosing "System" clears the stored choice and follows your device again.

A new visitor starts on "Light". A different browser or device starts there too, until you choose again.

Figures in dark mode

Course figures are drawn on a light background. In the dark theme they keep a light frame so they stay readable.