Q-Menu Styling around the "portal/teleport"?

[jonathancounihan]

On the q-menu docs page, https://quasar.dev/vue-components/menu#usage, it says the following:

"QMenu will be injected as a direct child of through a Quasar Portal."

What is a quasar portal? Or Teleport? I have seen that term used in the docs but I don't understand what it refers to. Is it just referring to moving content around the page?

Also how can I style around the q-menu? Since the menu is positioned using calculations, I can't seem to use css positioning to achieve the affect I want:

This is what I have done so far:

The arrow is hidden of course because of the positioning of the menu it self. Any ideas on how I can achieve this? Or which would be a better component to use?

I have created a pen as an example: https://codepen.io/jonathancounihan/pen/bGPXJVa

Thanks a bunch.