Border styling example on the Box page

[abitrolly]

https://github.com/rivo/tview/wiki/Box page is nice, but it could be better if it also listed how to style boxes.

How to make a box border single line instead of double line?
How to remove side borders and leave only the top with menu at the bottom?

If Box is not the right element to make bottom menus, then a link tp a proper element with explanation why Box is not good would be nice.

[rivo]

How to make a box border single line instead of double line?

Boxes always have a single line if they don't have focus. Only boxes that currently have focus have double lines. (Only one box can have focus at a time.)

How to remove side borders and leave only the top with menu at the bottom?

There is no widget that provides this out of the box. There are some tools to implement something like that yourself. Check this out:

https://github.com/rivo/tview/wiki/Primitives

Long term, there are also plans to add more decoration options to the Box primitive (see the survey in #578). But at the moment, those are not available.

If you only need one menu on your page, you might want to place it into its own widget. TextView or Form may be a good fit for that. The presentation demo in the repo uses TextView together with text view regions.