Hueser, Christian authored Feb 09, 2021 and Huste, Tobias committed Feb 19, 2021

    * Additional button that points to descriptions of the Helmholtz GitLab
    service.
    * Add some css to layout button next to the other services buttons on
    different devices.
    * Add some css to layout service page.
    * Add some dummy text to see how it looks like if text is included.