Creating a Menu Sidebar or Header in Harlowe

So i haven't had a lot of luck with previous threads asking for advice, but what the heck. I'll ask again and hope someone answers.

Spent the last five or so hours trying to get a menu sidebar or footer to work for an RPG I'm making. I want to put a link to see the player's stats in it, the save and load button, usual stuff. I know it exists in other Twine games, but I can't seem to get it to work in Harlowe.

Tried Sharpe's solution and while this provided a nifty sidebar, it wasn't at all mobile friendly. So far I'm facing the choice of having no sidebar and mobile-friendly text, or something only optimized for PC players. I know how to create a header and footer, but these aren't visually appealing as they're relative to the length of the story text. Ideally, I'd want something that's it's own box and stays static on the user's screen, regardless of scrolling.

Is this possible with Harlowe? I really don't want to have to switch story formats to something like Sugarcube to achieve this. I've done a fair bit already and I find Harlowe's way of doing macros far more friendly.