Use a dialog preloader but without text

I love the animation on the dialog.preloader of Vue, but it says “Loading…”
I also tried with a custom empty string but it won’t resize, it’ll still cover up almost the whole width of the screen, but I do like how it’s a dialog that darkens the background while loading.

How could I resize the dialog to achieve this?

I know I can create a custom dialog, and I know how to add the darker background and buttons and such, but how do I add a preloader inside a custom dialog?
In fact I only want the preloader, the animations and the backdrop, no text, no buttons.

Preloader content:
https://framework7.io/docs/utils.html#preloadercontent

Maybe you are looking for app.preloader.show()?
https://framework7.io/docs/preloader.html#preloader-overlay-preloader-api