Segments does not appear in columns. (Yet I'm able to continue.)



Explanation : Bootstrap has a responsive layout. In the preview window there is no space for three columns, but when you do a full-screen preview, all columns suddenly fit.



Please re-edit your Post

  • leave one blank-line above of your code
  • select your code in the Post
  • then =click= on the </>-symbol-of-this-editor

Your code will then be in a pre-code state
and you will be able to make/present the proper indentations.

or even better use