Footer should be fixed

[johannsell]

If the page content does not use the whole display space, the footer's bottom line should be fixed to the bottom of the display space. Use CSS display: flex; to fix the issue.

[deinelieblings]

the bug ist fixed by f2d137d

[johannsell]

Don't use position: relative. A modern browser should be able to use

body {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}