Vivaldi Website: Collapse menu bar on scroll

[quincy8888]

I'm recommending a small UI change to the website. When users scroll down, one more of the three menu bars should collapse. On my 13in screen, this is a little less than 20% of the browser's vertical space.
ie. this

collapses to this

instead of this

or this

[jane.n]

On scroll, the middle menu (Home, Blogs, etc.) already disappears when you scroll.
The top menu isn't hidden by default, but can be hidden with Vivaldi Forum mod extension.

[quincy8888]

@jane-n That extension is perfect, thanks!