Refactor nav-button util

[wallace41290]

Perhaps, but maybe that should go in a different PR. We might want to make it a little more generic too, it assumes there are all HTMLButtonElement, but I am going to use for the main <h1> in the top hero.

I also had a question about the button ripple initialization and if that should go here?

I think this should be a more generic, "smooth scroll" utility, doesn't have to be a button or could even be triggered programmatically...

Originally posted by @wallace41290 in https://github.com/_render_node/MDI0OlB1bGxSZXF1ZXN0UmV2aWV3Q29tbWVudDQzMzI3MzcxOA==/comments/review_comment