A header is a container separated from the main content by a line. It's padding adapts to the [main options](#option-border) (by default, the header stretches slightly more than the content, while with `--lesspadding` it stays as it is).

You can have titles (of any size), titles with icons, buttons on the right, basically anything... within reason.

They have `display: flex`, so that any content you insert will automatically be pushed to the extremities and kept on one line. Also, it overrides the `margin` to `0` for any type of title, button or dropdown.

Headers have no additional options.

They can be combined with **footers**.