To navigate comfortably through this website, the user has a main menu available, which is placed on each page in the upper area (directly to the right of the logo).
If the "Sticky Main-Menu" option is activated, the main menu will follow the scrolling of the browser when scrolling the page (up or down). This changes the appearance of the main menu a bit, but the functionality remains the same.
On mobile devices or if the browser's display area falls below a certain width, the main menu will be displayed as an icon on each page in the top right corner. The icon of the main menu will also follow the scrolling of the browser when scrolling the page (up or down). However, this only applies if the option "Sticky Main-Menu" is activated. If this option is deactivated, the icon of the main menu is located on each page in the top left corner and remains there when the page is scrolled.
If the mouse pointer is over an element of the main menu, and this element contains further subelements/levels, then a menu box opens with further menu entries, again corresponding to the entries to be displayed/to be listed. Left-clicking with the mouse, or pressing the 'Return' key while the focus is active, opens the desired page.
On mobile devices or if the display area of the browser falls below a certain width, the usage is slightly different: here you have to first open it by tapping on a menu item to get more sub-elements/levels. Tapping an element that contains no further sub-elements/levels opens the desired page. If, however, an element contains further sub-elements/levels, these are indicated by double-tapping.